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Overview

Paul Townsend

Principal Investigator

Prof. Paul Townsend is Head of the Photonics Centre at the Tyndall National Institute and Research Professor in the Department of Physics at University College Cork in Ireland. The Photonics Centre comprises nine internationally-recognised research teams (around 130 staff and PhD students in total) carrying out R&D and commercialisation activities spanning the areas of semiconductor materials and devices, photonic integration and packaging, through to advanced photonic systems for telecommunications and healthcare applications. Since June 2012 he is also Director of the new SFI Irish Photonic Integration Centre (IPIC). IPIC brings together Irish research capabilities in Photonics and Biomedical Science and 18 industrial partners, to develop technological solutions via photonic integration to enable point-of care medical diagnostics, minimally invasive patient monitoring, screening and surgical procedures, and continued growth of communications systems and the internet. IPIC represents a combined SFI and industry investment of some €24M in Irish photonics research over the period 2013-2019.

 

Biography

Prof. Paul Townsend is Head of the Photonics Centre at the Tyndall National Institute and Research Professor in the Department of Physics at University College Cork in Ireland. The Photonics Centre comprises nine internationally-recognised research teams (around 130 staff and PhD students in total) carrying out R&D and commercialisation activities spanning the areas of semiconductor materials and devices, photonic integration and packaging, through to advanced photonic systems for telecommunications and healthcare applications. Since June 2012 he is also Director of the new SFI Irish Photonic Integration Centre (IPIC). IPIC brings together Irish research capabilities in Photonics and Biomedical Science and 18 industrial partners, to develop technological solutions via photonic integration to enable point-of care medical diagnostics, minimally invasive patient monitoring, screening and surgical procedures, and continued growth of communications systems and the internet. IPIC represents a combined SFI and industry investment of some €24M in Irish photonics research over the period 2013-2019.

In terms of his personal research accomplishments, Paul Townsend is widely-recognised as one of the founders of the field of experimental Quantum Key Distribution (QKD), being the first to demonstrate phase-encoded QKD in fibre links, multi-user networks and Wavelength Division Multiplexed (WDM) systems, whilst at BT Laboratories in the UK. The main focus of his current research at Tyndall is next generation fibre to the home networks, and in particular new large scale networks that can significantly reduce the cost and energy consumption of the whole network by eliminating unnecessary electronic switches and routers. His group has developed a number of inventions related to this, and other access or data centre applications, which are under development within his core research programme. His team’s work on long reach access has been highlighted by BT at major conferences such as the Broadband World Forum, ECOC and OFC, and is of interest to standardisation bodies such as the IEEE 802.3 Extended EPON Study Group. He collaborates widely with industry, working with some 15 companies over the last five years, including major ICT multi-nationals such as BT, Intel, Alcatel-Lucent and Nokia Siemens Networks.

Paul Townsend was awarded a PhD in Physics from the University of Cambridge in 1987. He subsequently worked in the international communications industry with Bell Communications Research, BT and Corning, where he held research leadership positions, before moving to Tyndall/UCC in 2003. He has authored more than 170 peer-reviewed publications, including 40 invited papers, and holds granted patents in 16 families to date, with several other applications pending.  is also an Honorary Professor in the School of Engineering and Physical Sciences at Heriot-Watt University in Edinburgh and a Fellow of the Institute of Physics.

Research
Research Interests

Photonic communications, specialising in particular on next generation fibre to the home networks.

Quantum communications, specialising in particular on Quantum Key Distribution.

Optical and electronic properties of polymeric semiconductors (no longer active)

Research Grants
ProjectFunding
Body
Start DateEnd DateAward
Next generation Photonic Access and Data Communication Systems.Science Foundation of Ireland01-MAY-1330-APR-18€2,570,494.00
EU Grant Manager/I-PIC Irish Photonic Integration Research Centre.Science Foundation of Ireland01-MAR-1428-FEB-19€562,307.00
I-PIC Irish Photonic Integrated Research Centre.Science Foundation of Ireland01-JAN-1530-JUN-19€3,887,034.00
I-PIC Irish Photonic Integration Research Centre.Science Foundation of Ireland01-JAN-1431-DEC-15€152,572.00
Transfer print for integrated on-wafer laser.Science Foundation of Ireland01-OCT-1430-SEP-16€648,023.00
SFI Photonic System Research – David CotterScience Foundation of Ireland01-MAY-0721-SEP-13€64,700.00
EU “Photonic Integrated Extended Metro and Access Network”European Union01-JAN-0631-DEC-09€402,600.00
SFI Photonic System Research – Paul TownsendScience Foundation of Ireland01-MAY-0721-SEP-13€1,215,900.00
EI FP/2010/609 Travel SupportEnterprise Irl19-FEB-1019-MAY-10€800.00
Superchannel Transponders for super – Tb/s Elastic Optical Networks.Science Foundation of Ireland01-SEP-1431-AUG-18€812,153.00
Photonics Seminar Series 22015-2016Miscellaneous01-JAN-1531-DEC-16€10,000.00
EU “Vertically Integrated Systems for Information Transfer” VISITEuropean Union01-JUN-0831-DEC-15€242,787.00
Photonics Systems Control AccountMiscellaneous01-MAY-0730-NOV-15€57,052.00
SFI Photonics System Research – General Admin AccountScience Foundation of Ireland01-MAY-0731-DEC-15€8,433,900.00
Colourless and Coolerless components for Power Optical NetworksEuropean Union01-JUN-1030-DEC-13€373,231.00
High Speed Photonic Device & System testbed.Science Foundation of Ireland01-JAN-1331-DEC-13€305,748.00
EI – Quantum Cryptography for Passive Optical NetworksEnterprise Irl15-DEC-0815-DEC-12€383,959.00
I-PIC Irish Photonic Integration Research Centre.Science Foundation of Ireland20-MAY-1320-MAY-19€2,409,676.00
I-PIC Irish Photonic Integration Research Centre.Science Foundation of Ireland20-MAY-1331-DEC-15€152,572.00
Centre for Telcommunications Value-chain Research Second Term Funding.Science Foundation of Ireland01-JUN-1131-MAY-16€354,982.00
IRCSET Scholarship – Iris ChoiIrish Research Council for Science, Engineering & Technology (IRCSET)01-OCT-0531-MAR-09€149,828.00
Publications
Other Journals
YearPublication
(1987) ‘Structural studies of oriented precursor route conjugated polymers’

Bradley, DDC and Friend, RH and Hartmann, T and Marseglia, EA and Sokolowski, MM and Townsend, PD (1987) ‘Structural studies of oriented precursor route conjugated polymers’ Synthetic Metals, 17 (1) :473-478. [Details]

(1987) ‘Conformational defects in Durham polyacetylene’

Friend, RH and Bradley, DDC and Townsend, PD and Bott, DC (1987) ‘Conformational defects in Durham polyacetylene’ Synthetic Metals, 17 (1) :267-272. [Details]

(1987) ‘Photoexcitation in oriented polyacetylene’

Townsend, PD and Friend, RH (1987) ‘Photoexcitation in oriented polyacetylene’ Synthetic Metals, 17 (1) :361-366. [Details]

(1986) ‘Conformational defects in Durham-route polyacetylene’

Friend, RH and Bradley, DDC and Pereira, CM and Townsend, PD and Bott, DC and Williams, KPJ (1986) ‘Conformational defects in Durham-route polyacetylene’ Synthetic metals, 13 (1) :101-112. [Details]

Peer Reviewed Journals
YearPublication
(2015) ‘Demonstration of 10 Gbit/s Burst-Mode Transmission Using a Linear Burst-Mode Receiver and Burst-Mode Electronic Equalization [Invited]’

Stefano Porto, Cleitus Antony, Anil Jain, Denis Kelly, Daniel Carey, Giuseppe Talli, Peter Ossieur, Paul D Townsend (2015) ‘Demonstration of 10 Gbit/s Burst-Mode Transmission Using a Linear Burst-Mode Receiver and Burst-Mode Electronic Equalization [Invited]’. Journal Of Optical Communications And Networking, 7 (1) [Details]

(2014) ‘DISCUS: An End-to-End Solution for Ubiquitous Broadband Optical Access’

Ruffini, M,Wosinska, L,Achouche, M,Chen, JJ,Doran, N,Farjady, F,Montalvo, J,Ossieur, P,O’Sullivan, B,Parsons, N,Pfeiffer, T,Qiu, XZ,Raack, C,Rohde, H,Schiano, M,Townsend, P,Wessaly, R,Yin, X,Payne, DB (2014) ‘DISCUS: An End-to-End Solution for Ubiquitous Broadband Optical Access’. Ieee Communications Magazine, 52 :24-32 [Details]

(2014) ‘Design Optimization of R-EAM-SOA for Long-Reach Carrier-Distributed Passive Optical Networks’

A Naughton, G Talli, S Porto, C Antony, P Ossieur, PD Townsend (2014) ‘Design Optimization of R-EAM-SOA for Long-Reach Carrier-Distributed Passive Optical Networks’. Journal of Lightwave Technology, 32 (22):3784-3790 [Details]

(2014) ‘Multichannel 25 Gb/s Low-Power Driver and Transimpedance Amplifier Integrated Circuits for 100 Gb/s Optical Links’

Verbrugghe, J. ; Vaernewyck, R. ; Moeneclaey, B. ; Xin Yin ; Maxwell, G. ; Cronin, R. ; Torfs, G. ; Xing-Zhi Qiu ; Lai, C.P. ; Townsend, P. ; Bauwelinck, J. (2014) ‘Multichannel 25 Gb/s Low-Power Driver and Transimpedance Amplifier Integrated Circuits for 100 Gb/s Optical Links’. Journal of Lightwave Technology, 32 (16):2877-2885 [DOI] [Details]

(2013) ‘A 10 Gb/s Linear Burst-Mode Receiver in 0.25 m SiGe: C BiCMOS’

Ossieur, Peter and Quadir, Nasir A and Porto, Stefano and Antony, Cleitus and Han, Wei and Rensing, Marc and O’Brien, Peter and Townsend, Paul D (2013) ‘A 10 Gb/s Linear Burst-Mode Receiver in 0.25 m SiGe: C BiCMOS’. IEEE Journal of Solid-State Circuits, 48 (2):381-390 [Details]

(2013) ‘Demonstration of error-free 25Gb/s duobinary transmission using a colourless reflective integrated modulator’

Lai, Caroline P and Naughton, Alan and Ossieur, Peter and Antony, Cleitus and Smith, David W and Borghesani, Anna and Moodie, David G and Maxwell, Graeme and Healey, Peter and Poustie, Alistair and others (2013) ‘Demonstration of error-free 25Gb/s duobinary transmission using a colourless reflective integrated modulator’. Optics Express, 21 (1):500-507 [Details]

(2013) ‘Advantageous Effects of Gain Saturation in Semiconductor Optical Amplifier-Based Integrated Reflective Modulators’

Talli, Giuseppe and Naughton, Alan and Porto, Stefano and Antony, Cleitus and Ossieur, Peter and Townsend, Paul D (2013) ‘Advantageous Effects of Gain Saturation in Semiconductor Optical Amplifier-Based Integrated Reflective Modulators’. IEEE Journal of Lightwave Technology, 32 (3):392-401 [Details]

(2012) ’10 Gbit/s transmission over 50 km of SMF using MEMS tunable VCSEL’

Daly, A,Gierl, C,Grundl, T,Grasse, C,Zogal, K,Carey, D,Townsend, P,Amann, MC,Meissner, P,Corbett, B (2012) ’10 Gbit/s transmission over 50 km of SMF using MEMS tunable VCSEL’. Electronics Letters, 48 :394-133 [DOI] [Details]

(2012) ‘An upstream reach-extender for 10Gb/s PON applications based on an optimized semiconductor amplifier cascade’

Porto, Stefano and Antony, Cleitus and Ossieur, Peter and Townsend, Paul D (2012) ‘An upstream reach-extender for 10Gb/s PON applications based on an optimized semiconductor amplifier cascade’. Optics Express, 20 (1):186-191 [Details]

(2011) ‘Analysis of detector performance in a gigahertz clock rate quantum key distribution system’

Clarke, Patrick J and Collins, Robert J and Hiskett, Philip A and Garc\’\ia-Mart\’\inez, Mar\’\ia-Jos\’e and Krichel, Nils J and McCarthy, Aongus and Tanner, Michael G and O’Connor, John A and Natarajan, Chandra M and Miki, Shigehito and others (2011) ‘Analysis of detector performance in a gigahertz clock rate quantum key distribution system’. Applied Physics Letters, 98 (13) [Details]

(2011) ‘Robust gigahertz fiber quantum key distribution’

Clarke, Patrick J and Collins, Robert J and Hiskett, Philip A and Townsend, Paul D and Buller, Gerald S (2011) ‘Robust gigahertz fiber quantum key distribution’. New Journal of Physics, 98 (13) [Details]

(2011) ‘Quantum information to the home’

Choi, Iris and Young, Robert J and Townsend, Paul D (2011) ‘Quantum information to the home’. New Journal of Physics, 13 (6) [Details]

(2011) ‘Optimisation of SOA-REAMs for Hybrid DWDM-TDMA PON Applications’

Alan Naughton, Cleitus Antony, Peter Ossieur, Stefano Porto, Giuseppe Talli, and Paul D. Townsend (2011) ‘Optimisation of SOA-REAMs for Hybrid DWDM-TDMA PON Applications’. Optics Express, 19 (25):B722-B727 [Details]

(2011) ‘A 135-km 8192-split carrier distributed DWDM-TDMA PON with 2 32 10 Gb/s capacity’

Ossieur, Peter and Antony, Cleitus and Clarke, Aisling M and Naughton, Alan and Krimmel, H-G and Chang, Y and Ford, Colin and Borghesani, Anna and Moodie, D and Poustie, Alistair and others (2011) ‘A 135-km 8192-split carrier distributed DWDM-TDMA PON with 2 32 10 Gb/s capacity’. IEEE Journal of Lightwave Technology, 29 (4):463-474 [Details]

(2011) ‘Demonstration of a 32 512 split, 100 km reach, 2 32 10 Gb/s hybrid DWDM-TDMA PON using tunable external cavity lasers in the ONUs’

Ossieur, Peter and Antony, Cleitus and Naughton, Alan and Clarke, Aisling M and Krimmel, H-G and Yin, Xin and Qiu, Xing-Zhi and Ford, Colin and Borghesani, Anna and Moodie, David and others (2011) ‘Demonstration of a 32 512 split, 100 km reach, 2 32 10 Gb/s hybrid DWDM-TDMA PON using tunable external cavity lasers in the ONUs’. IEEE Journal of Lightwave Technology, 29 (24):3705-3718 [Details]

(2010) ‘Quantum key distribution on a 10Gb/s WDM-PON’

Choi, Iris and Young, Robert J and Townsend, Paul D (2010) ‘Quantum key distribution on a 10Gb/s WDM-PON’. Optics Express, 18 (9):9600-9612 [Details]

(2008) ‘High extinction switching of SOAs for in-band crosstalk reduction in PON’

Antony, C and Talli, G and Townsend, PD and Bauwelinck, Johan and Smith, DW and Lealman, I (2008) ‘High extinction switching of SOAs for in-band crosstalk reduction in PON’. Electronics Letters, 44 (14):872-873 [Details]

(2008) ‘Modeling of modulation formats for interferometric noise mitigation’

Talli, Giuseppe and Chow, Chi Wai and Townsend, Paul D (2008) ‘Modeling of modulation formats for interferometric noise mitigation’. IEEE Journal of Lightwave Technology, 26 (17):3190-3198 [Details]

(2008) ‘Rayleigh noise mitigation in DWDM LR-PONs using carrier suppressed subcarrier-amplitude modulated phase shift keying’

Chow, CW and Talli, G and Ellis, Andrew D and Townsend, PD (2008) ‘Rayleigh noise mitigation in DWDM LR-PONs using carrier suppressed subcarrier-amplitude modulated phase shift keying’. Optics Express, 16 (3):1860-1866 [Details]

(2007) ‘A multiwavelength low-power wavelength-locked slotted Fabry–Perot laser source for WDM applications’

Mondal, SK and Roycroft, B and Lambkin, P and Peters, F and Corbett, B and Townsend, P and Ellis, A (2007) ‘A multiwavelength low-power wavelength-locked slotted Fabry–Perot laser source for WDM applications’. IEEE Photonics Technology Letters, 19 (10):744-746 [Details]

(2007) ‘Passive optical network approach to gigahertz-clocked multiuser quantum key distribution’

Fernandez, Veronica and Collins, Robert J and Gordon, Karen J and Townsend, Paul D and Buller, Gerald S (2007) ‘Passive optical network approach to gigahertz-clocked multiuser quantum key distribution’. Journal of Quantum Electronics, 43 (2):130-138 [Details]

(2007) ‘Rayleigh noise reduction in 10-Gb/s DWDM-PONs by wavelength detuning and phase-modulation-induced spectral broadening’

Chow, CW and Talli, G and Townsend, PD (2007) ‘Rayleigh noise reduction in 10-Gb/s DWDM-PONs by wavelength detuning and phase-modulation-induced spectral broadening’. IEEE Photonics Technology Letters, 19 (6):423-425 [Details]

(2007) ‘Rayleigh noise mitigation in long-reach hybrid DWDM-TDM PONs’

Talli, Giuseppe and Chow, Chi Wai and MacHale, Eimear K and Townsend, Paul D (2007) ‘Rayleigh noise mitigation in long-reach hybrid DWDM-TDM PONs’. Journal of Optical Networking, 6 (6):765-776 [Details]

(2006) ‘Reduction of Rayleigh Noise in 10Gb/s DWDM-PONs by Wavelength Detuning and Phase Modulation Induced Spectral Broadening’

Chow, CW and Talli, G and Townsend, PD (2006) ‘Reduction of Rayleigh Noise in 10Gb/s DWDM-PONs by Wavelength Detuning and Phase Modulation Induced Spectral Broadening’. Electronics Letters, 90 [Details]

(2006) ‘Rayleigh backscattering impairments in access networks with centralised light source’

Talli, G and Cotter, D and Townsend, PD (2006) ‘Rayleigh backscattering impairments in access networks with centralised light source’. Electronics Letters, 42 (15):877-878 [Details]

(2006) ‘Hybrid DWDM-TDM long-reach PON for next-generation optical access’

Talli, Giuseppe and Townsend, Paul D (2006) ‘Hybrid DWDM-TDM long-reach PON for next-generation optical access’. IEEE Journal of Lightwave Technology, 24 (7) [Details]

(2005) ‘Quantum key distribution system clocked at 2 GHz’

Gordon, Karen and Fernandez, Veronica and Buller, Gerald and Rech, Ivan and Cova, Sergio and Townsend, Paul (2005) ‘Quantum key distribution system clocked at 2 GHz’. Optics Express, 13 (8):3015-3020 [Details]

(2004) ‘A short wavelength gigahertz clocked fiber-optic quantum key distribution system’

Gordon, Karen J and Fernandez, Veronica and Townsend, Paul D and Buller, Gerald S (2004) ‘A short wavelength gigahertz clocked fiber-optic quantum key distribution system’. IEEE Journal of Quantum Electronics, 40 (7):900-908 [Details]

(2001) ‘Eighty kilometre transmission experiment using an InGaAs/InP SPAD-based quantum cryptography receiver operating at 1.55 $\mu$m’

Hiskett, Philip A and Bonfrate, Gabriele and Buller, Gerald S and Townsend, Paul D (2001) ‘Eighty kilometre transmission experiment using an InGaAs/InP SPAD-based quantum cryptography receiver operating at 1.55 $\mu$m’. Journal of Modern Optics, 48 (13):1957-1966 [Details]

(2001) ‘Spectral slicing WDM-PON using wavelength-seeded reflective SOAs’

Healey, P and Townsend, P and Ford, C and Johnston, L and Townley, P and Lealman, I and Rivers, L and Perrin, S and Moore, R (2001) ‘Spectral slicing WDM-PON using wavelength-seeded reflective SOAs’. Electronics Letters, 37 (19):1181-1182 [Details]

(2001) ‘Asymmetric Mach-Zehnder germano-silicate channel waveguide interferometers for quantum cryptography systems’

Bonfrate, G and Harlow, M and Ford, C and Maxwell, G and Townsend, PD (2001) ‘Asymmetric Mach-Zehnder germano-silicate channel waveguide interferometers for quantum cryptography systems’. Electronics Letters, 37 (13):846-847 [Details]

(2001) ‘Low-noise single-photon detection at wavelength 1.55 $\mu$m’

Hiskett, PA and Smith, JM and Buller, GS and Townsend, PD (2001) ‘Low-noise single-photon detection at wavelength 1.55 $\mu$m’. Electronics Letters, 37 (17):1081-1083 [Details]

(2000) ‘Performance and design of InGaAs/InP photodiodes for single-photon counting at 1.55 $\mu$m’

Hiskett, Philip A and Buller, Gerald S and Loudon, Alison Y and Smith, Jason M and Gontijo, Ivair and Walker, Andrew C and Townsend, Paul D and Robertson, Michael J (2000) ‘Performance and design of InGaAs/InP photodiodes for single-photon counting at 1.55 $\mu$m’. Applied Optics, 39 (36):6818-6829 [Details]

(1999) ‘Spectral slicing WDM-PON using wavelength-seeded reflective SOAs’

Healey, P and Townsend, P and Ford, C and Johnston, L and Townley, P and Lealman, I and Rivers, L and Perrin, S and Moore, R (1999) ‘Spectral slicing WDM-PON using wavelength-seeded reflective SOAs’. Electronics Letters, 17 (12):2431-2448 [Details]

(1998) ‘Experimental investigation of the performance limits for first telecommunications-window quantum cryptography systems’

Townsend, Paul D (1998) ‘Experimental investigation of the performance limits for first telecommunications-window quantum cryptography systems’. IEEE Photonics Technology Letters, 10 (7):1048-1050 [Details]

(1997) ‘Quantum cryptography: Secure communications using quantum physics’

Townsend, P and Phoenix, S (1997) ‘Quantum cryptography: Secure communications using quantum physics’. Bt Technology Journalbt Technology Journal, 16 :207-213 [Details]

(1997) ‘Quantum cryptography on multiuser optical fibre networks’

Townsend, Paul D (1997) ‘Quantum cryptography on multiuser optical fibre networks’. Nature, 385 (6611):47-49 [Details]

(1997) ‘Simultaneous quantum cryptographic key distribution and conventional data transmission over installed fibre using wavelength-division multiplexing’

Townsend, Paul D (1997) ‘Simultaneous quantum cryptographic key distribution and conventional data transmission over installed fibre using wavelength-division multiplexing’. Electronics Letters, 33 (3):188-190 [Details]

(1997) ‘Quantum cryptography: Protecting our future networks with quantum mechanics’

Phoenix, Simon JD and Townsend, Paul D (1997) ‘Quantum cryptography: Protecting our future networks with quantum mechanics’. Bt Technology Journalbt Technology Journal, 2 (2):88-97 [Details]

(1996) ‘Secure optical communications systems using quantum cryptography’

Townsend, Paul D and Marand, C and Phoenix, SJD and Blow, KJ and Barnett, SM (1996) ‘Secure optical communications systems using quantum cryptography’. Philosophical Transactions Of The Royal Society A-Mathematical Physical And Engineering Sciencesphilosophical Transactions Of The Royal Society A-Mathematical Physical And Engineering Sciences, 354 (1708):805-817 [Details]

(1996) ‘Measurement of the refractive-index modulation generated by electrostriction-induced acoustic waves in optical fibers’

Townsend, Paul D and Poustie, Alistair J and Hardman, PJ and Blow, KJ (1996) ‘Measurement of the refractive-index modulation generated by electrostriction-induced acoustic waves in optical fibers’. Optics Letters, 21 (5):333-335 [Details]

(1996) ‘Experimental investigation of resonant enhancement of the acoustic interaction of optical pulses in an optical fiber’

Hardman, PJ and Townsend, Paul D and Poustie, Alistair J and Blow, KJ (1996) ‘Experimental investigation of resonant enhancement of the acoustic interaction of optical pulses in an optical fiber’. Optics Letters, 21 (6):393-395 [Details]

(1995) ‘Multi-user quantum cryptography on optical networks’

Phoenix, Simon JD and Barnett, Stephen M and Townsend, Paul D and Blow, KJ (1995) ‘Multi-user quantum cryptography on optical networks’. Journal of Modern Optics, 42 (6):1155-1163 [Details]

(1995) ‘Quantum cryptography: how to beat the code breakers using quantum mechanics’

Phoenix, Simon JD and Townsend, Paul D (1995) ‘Quantum cryptography: how to beat the code breakers using quantum mechanics’. Contemporary Psychology, 36 (3):165-195 [Details]

(1995) ‘Quantum key distribution over distances as long as 30 km’

Marand, Christophe and Townsend, Paul D (1995) ‘Quantum key distribution over distances as long as 30 km’. Optics Letters, 20 (16):1695-1697 [Details]

(1995) ‘Measured reduction of guided-acoustic-wave Brillouin scattering in a fiber interferometer by time-delayed pulses’

Townsend, Paul D and Poustie, Alistair J (1995) ‘Measured reduction of guided-acoustic-wave Brillouin scattering in a fiber interferometer by time-delayed pulses’. Optics Letters, 20 (1):37-39 [Details]

(1994) ‘A quantum key distribution channel based on optical fibre’

Townsend, Paul D and Thompson, I (1994) ‘A quantum key distribution channel based on optical fibre’. Journal of Modern Optics, 41 (12):2425-2433 [Details]

(1994) ‘Design of quantum cryptography systems for passive optical networks’

Townsend, PD and Phoenix, SJD and Blow, KJ and Barnett, SM (1994) ‘Design of quantum cryptography systems for passive optical networks’. Electronics Letters, 30 (22):1875-1877 [Details]

(1994) ‘Photon counting with passively quenched germanium avalanche’

Owens, PCM and Rarity, JG and Tapster, PR and Knight, D and Townsend, PD (1994) ‘Photon counting with passively quenched germanium avalanche’. Applied Optics, 33 (30):6895-6901 [Details]

(1994) ‘Secure key distribution system based on quantum cryptography’

Townsend, Paul D (1994) ‘Secure key distribution system based on quantum cryptography’. Electronics Letters, 30 (10):809-811 [Details]

(1993) ‘Quantum cryptography and secure optical communications: Advances in optical technology’

Phoenix, SJD and Townsend, PD (1993) ‘Quantum cryptography and secure optical communications: Advances in optical technology’. Bt Technology Journalbt Technology Journal, 11 (2):65-75 [Details]

(1993) ‘Enhanced single photon fringe visibility in a 10 km-long prototype quantum cryptography channel’

Townsend, PD and Ougazzaden, A and Tapster, PR (1993) ‘Enhanced single photon fringe visibility in a 10 km-long prototype quantum cryptography channel’. Electronics Letters, 29 (14):1291-1293 [Details]

(1993) ‘Single photon interference in 10 km long optical fibre interferometer’

Townsend, PD and Rarity, JG and Tapster, PR (1993) ‘Single photon interference in 10 km long optical fibre interferometer’. Electronics Letters, 29 (7):634-635 [Details]

(1992) ‘Quantum-noise reduction at frequencies up to 0.5 GHz using pulsed parametric amplification’

Townsend, Paul D and Loudon, Rodney (1992) ‘Quantum-noise reduction at frequencies up to 0.5 GHz using pulsed parametric amplification’. Physical Review A, 45 (1) [Details]

(1991) ‘Short-Lived Photoinduced Excitations in Trans-Polyacetylene’

Rothberg, Lewis and Jedju, Thomas M and Townsend, Paul D and Etemad, Shahab and Baker, Gregory L (1991) ‘Short-Lived Photoinduced Excitations in Trans-Polyacetylene’. Molecular Crystals And Liquid Crystals, 194 (1):1-12 [Details]

(1991) ‘Non-linear optical spectroscopy of correlated $\pi$-electrons in a one-dimensional semiconductor’

Townsend, Paul D and Fann, W-S and Etemad, S and Baker, Gregory L and Soos, ZG and McWilliams, PCM (1991) ‘Non-linear optical spectroscopy of correlated $\pi$-electrons in a one-dimensional semiconductor’. Chemical Physics Letters, 180 (5):485-489 [Details]

(1990) ‘Fabrication of channel waveguides in polydiacetylenes: Composite diffused glass/polymer structures’

Schlotter, NE and Jackel, JL and Townsend, Paul D and Baker, Gregory L (1990) ‘Fabrication of channel waveguides in polydiacetylenes: Composite diffused glass/polymer structures’. Applied Physics Letters, 56 (1):13-15 [Details]

(1990) ‘Femtosecond dynamics of photogenerated solitons and polarons in trans-polyacetylene’

Rothberg, L and Jedju, TM and Townsend, PD and Etemad, S and Baker, GL (1990) ‘Femtosecond dynamics of photogenerated solitons and polarons in trans-polyacetylene’. Physical Review Letters, 65 (1) [Details]

(1989) ‘Observation of nonlinear optical transmission and switching phenomena in polydiacetylene-based directional couplers’

Townsend, Paul D and Jackel, JL and Baker, Gregory L and Shelburne III, JA and Etemad, S (1989) ‘Observation of nonlinear optical transmission and switching phenomena in polydiacetylene-based directional couplers’. Applied Physics Letters, 55 (18):1829-1831 [Details]

(1989) ‘Photoexcitation in Durham-route polyacetylene: Self-localization and charge transport’

Townsend, Paul D and Friend, Richard H (1989) ‘Photoexcitation in Durham-route polyacetylene: Self-localization and charge transport’. Physical Review B, 40 (5) [Details]

(1988) ‘Waveguiding in spun films of soluble polydiacetylenes’

Townsend, PD and Baker, GL and Schlotter, NE and Klausner, CF and Etemad, S (1988) ‘Waveguiding in spun films of soluble polydiacetylenes’. Applied Physics Letters, 53 (19):1782-1784 [Details]

(1987) ‘Photo-excitation in conjugated polymers’

Friend, RH and Bradley, DDC and Townsend, PD (1987) ‘Photo-excitation in conjugated polymers’. Journal Of Physics D-Applied Physics, 20 (11) [Details]

(1987) ‘Neutral photo-excitations in oriented polyacetylene’

Townsend, PD and Friend, RH (1987) ‘Neutral photo-excitations in oriented polyacetylene’. Journal Of Physics-Condensed Matterjournal Of Physics-Condensed Matter, 20 (26) [Details]

(1985) ‘Aspects of Stress Induced Crystallinity in Durham Polyacetylene’

Bott, DC and Walker, NS and White, D and Friend, RH and Townsend, PD (1985) ‘Aspects of Stress Induced Crystallinity in Durham Polyacetylene’. Molecular Crystals And Liquid Crystals, 117 (1):95-98 [Details]

(1985) ‘Increase in chain conjugation length in highly oriented Durham-route polyacetylene’

Townsend, PD and Pereira, CM and Bradley, DDC and Horton, ME and Friend, RH (1985) ‘Increase in chain conjugation length in highly oriented Durham-route polyacetylene’. Journal of Physics D: Applied Physics, 18 (11) [Details]

Book Chapters
YearPublication
(1995) ‘Quantum cryptography: protecting our future networks with quantum mechanics’

Phoenix, Simon JD and Townsend, Paul D (1995) ‘Quantum cryptography: protecting our future networks with quantum mechanics’ In: Lecture Notes in Computer Science, Cryptography and Coding. New York: Springer.
[Details]

(1985) ‘Electronic properties of polyacetylene prepared by the Durham route’

Townsend, PD and Bradley, DDC and Horton, ME and Pereira, CM and Friend, RH and Billingham, NC and Calvert, PD and Foot, PJS and Bott, DC and Chai, CK and others (1985) ‘Electronic properties of polyacetylene prepared by the Durham route’ In: Solid State Sciences 63. New York: Springer.
[Details]

Conference Publications
YearPublication
(2014) Circuits and Systems (ISCAS), 2014 IEEE International Symposium on

Quadir, Nasir Abdul and Townsend, Paul D and Ossieur, Peter (2014) An inductorless linear optical receiver for 20Gbaud/s (40Gb/s) PAM-4 modulation using 28nm CMOS Circuits and Systems (ISCAS), 2014 IEEE International Symposium on , pp.2473-2476 [Details]

(2014) European Solid State Circuits Conference (ESSCIRC), ESSCIRC 2014-40th

Krishna, Manthena Vamshi and Jain, Anil and Quadir, Nasir Abdul and Townsend, Paul D and Ossieur, Peter (2014) A 1V 2mW 17GHz multi-modulus frequency divider based on TSPC logic using 65nm CMOS European Solid State Circuits Conference (ESSCIRC), ESSCIRC 2014-40th , pp.431-434 [Details]

(2014) 2014 European Conference on Optical Communication (ECOC)

Cleitus Antony, Giuseppe Talli, Marco Dalla Santa, Brian Murray, Stephen Hegarty, Efstratios Kehayas, Igor Krestnikov, Paul D Townsend (2014) XG-PON Raman reach extender based on quantum dot lasers 2014 European Conference on Optical Communication (ECOC) [Details]

(2014) Optical Fiber Communication Conference (OFC 2014)

Peter Ossieur, Stefano Porto, Cleitus Antony, Anil Jain, Denis Kelly, Nasir Quadir, Giuseppe Talli, Paul Townsend (2014) Burst-mode Electronic Dispersion Compensation Optical Fiber Communication Conference (OFC 2014) [Details]

(2014) Optical Fiber Communication Conference (OFC 2014)

Stefano Porto, Cleitus Antony, Giuseppe Talli, Daniel Carey, Peter Ossieur, Paul Townsend (2014) Demonstration of 10Gb/s burst-mode transmission using a linear burst-mode receiver and burst-mode electronic equalization Optical Fiber Communication Conference (OFC 2014) [Details]

(2013) European Conference on Optical Communications (ECOC 2013)

Lai, C.P. ; Vaernewyck, R. ; Naughton, A. ; Bauwelinck, J. ; yin, x. ; Qiu, X.Z. ; Maxwell, G. ; Smith, D.W. ; Borghesani, A. ; Cronin, R. ; Grobe, K. ; Parsons, N. ; Kehayas, E. ; Townsend, P.D. (2013) Multi-channel 11.3-Gb/s integrated reflective transmitter for WDM-PON European Conference on Optical Communications (ECOC 2013) London, , pp.1-3 [DOI] [Details]

(2013) European Conference on Optical Communications (ECOC 2013)

Bauwelinck, J. ; Vaernewyck, R. ; Verbrugghe, J. ; Soenen, W. ; Moeneclaey, B. ; Van Praet, C. ; Vyncke, A. ; Torfs, G. ; yin, x. ; Qiu, X.Z. ; Vandewege, J. ; Sotiropoulos, N. ; de Waardt, H. ; Cronin, R. ; Maxwell, G. ; Tekin, T. ; Bakopoulos, P. ; Lai, C.P. ; Townsend, P.D. (2013) High-speed electronics for short-link communication [Invited] European Conference on Optical Communications (ECOC 2013) , pp.1-3 [DOI] [Details]

(2013) Optical Fiber Communication Conference (OFC 2013)

Stefano Porto, Cleitus Antony, Giuseppe Talli, Peter Ossieur, Paul Townsend (2013) Requirements for adaptive electronic dispersion compensation in burst-mode systems [Invited] Optical Fiber Communication Conference (OFC 2013) [Details]

(2012) Signals and Systems Conference (ISSC 2012), IET Irish

Quadir, N and Ossieur, P and Townsend, PD (2012) A 56Gb/s PAM-4 VCSEL driver circuit Signals and Systems Conference (ISSC 2012), IET Irish , pp.1-5 [Details]

(2012) Transparent Optical Networks (ICTON), 2012 14th International Conference on

Lai, Caroline P and Naughton, Alan and Ossieur, Peter and Smith, David W and Borghesani, Anna and Moodie, David G and Maxwell, Graeme and Healey, Peter and Parsons, Nick and Jensen, Rich and others (2012) Low-power colourless reflective components for energy-efficient optical networks [Invited] Transparent Optical Networks (ICTON), 2012 14th International Conference on , pp.1-4 [Details]

(2012) Transparent Optical Networks (ICTON), 2012 14th International Conference on

Cano, I and Porto, S and Naughton, A and Ossieur, P and Townsend, PD and Lazaro, JA and Prat, J (2012) Upstream performance improvement of low cost 10Gb/s ONUs with centralized OLT equalizer and FEC Transparent Optical Networks (ICTON), 2012 14th International Conference on , pp.1-3 [Details]

(2012) Signals and Systems Conference (ISSC 2012), IET Irish

Jain, A and Ossieur, P and Townsend, PD (2012) A variable gain amplifier with fast feedforward dc-offset compensation for 10Gb/s burst-mode receiver applications Signals and Systems Conference (ISSC 2012), IET Irish , pp.1-6 [Details]

(2012) Optical Society of America Conference on Optical Instrumentation for Energy and Environmental Applications

Cleitus Antony, John Hayes, Paul Townsend (2012) Single-Photon Detector Based Long-Range Fibre-Optic Distributed Temperature Sensor Optical Society of America Conference on Optical Instrumentation for Energy and Environmental Applications [Details]

(2012) European Conference on Optical Communications (ECOC 2012)

Lai, C.P., Naughton, A., Ossieur, P., Antony, C., Smith, D.W., Borghesani, A., Moodie, D.G., Maxwell, G. ,Healey, P. , Poustie, A., Townsend, P.D. (2012) Demonstration of error-free 25Gb/s duobinary transmission using a colourless reflective integrated modulator European Conference on Optical Communications (ECOC 2012) London, , pp.1-3 [Details]

(2012) Optical Fiber Communication Conference (OFC 2012)

Peter Ossieur, Cleitus Antony, Alan Naughton, Stefano Porto, Nasir A Quadir, Aisling Clarke, Paul D Townsend (2012) Hybrid DWDM-TDMA PONs for next generation access [Invited] Optical Fiber Communication Conference (OFC 2012) [Details]

(2012) Optical Fiber Communication Conference (OFC 2012)

Alan Naughton, Peter Ossieur, Cleitus Antony, David W Smith, Anna Borghesani, David G Moodie, Graeme Maxwell, Peter Healey, Paul D Townsend (2012) Error-free 10Gb/s duobinary transmission over 215km of SSMF using a hybrid photonic integrated reflective modulator Optical Fiber Communication Conference (OFC 2012) [Details]

(2012) International Conference on Photonics in Switching (2012)

Lai, C.P. ; Naughton, A. ; Ossieur, P. ; Townsend, P.D. ; Smith, D.W. ; Borghesani, A. ; Moodie, D.G. ; Maxwell, G. ; Bauwelinck, J. ; Vaernewyck, R. ; Verbrugghe, J. ; yin, x. ; Qiu, X.Z. ; Eiselt, M. ; Grobe, K. ; Parsons, N. ; Jensen, R. ; Kehayas, E. (2012) Energy-efficient colourless photonic technologies for next-generation DWDM metro and access networks (Invited) International Conference on Photonics in Switching (2012) Ajaccio, , 11-SEP-12 – 14-SEP-12 , pp.1-3 [DOI] [Details]

(2011) Optical Fiber Communication Conference

Clarke, Aisling M and Borghesani, Anna and Smith, David W and Ossieur, Peter and Townsend, Paul and Jensen, Rich and Parsons, Nick (2011) Demonstration of wavelength agile metro node using reflective colorless components Optical Fiber Communication Conference [Details]

(2011) CLEO: Science and Innovations

Clarke, Patrick J and Collins, Robert J and McCarthy, Aongus and Krichel, Nils J and Garc\’\ia-Mart\’\inez, Mar\’\ia-Jos\’e and Tanner, Michael G and O’Connor, John A and Natarajan, Chandra M and Miki, Shigehito and Sasaki, Masahide and others (2011) An Analysis of Single-Photon Detectors in an Environmentally Robust GigaHertz Clock Rate Quantum Key Distribution System CLEO: Science and Innovations [Details]

(2011) Optical Transmission Systems, Switching, and Subsystems VIII, Shanghai, China, 8-12 December

Buller, GS, Collins, RJ, Clarke, PJ & Townsend (2011) Gigahertz quantum cryptography Optical Transmission Systems, Switching, and Subsystems VIII, Shanghai, China, 8-12 December Shanghai, China, , 08-DEC-11 [DOI] [Details]

(2011) Transparent Optical Networks (ICTON), 2011 13th International Conference on

Kehayas, E and Clarke, AM and Borghesani, A and Vyrsokinos, K and Smith, DW and Ossieur, P and Moodie, DG and Jensen, R and Parsons, N and Townsend, PD (2011) Network and system architectures for energy-efficient metro and access networks employing reflective photonics [Invited] Transparent Optical Networks (ICTON), 2011 13th International Conference on , pp.1-5 [Details]

(2011) European Conference on Optical Communications (ECOC 2011)

Paul D Townsend, A Clarke, Peter Ossieur, D Smith, Anna Borghesani, D Moodie, I Lealman, Xing-Zhi Qiu, Johan Bauwelinck, Xin Yin, Klaus Grobe, Brian T Teipen, Rich Jensen, Nick Parsons, E Kehayas (2011) Towards colourless coolerless components for low power optical networks [Invited] European Conference on Optical Communications (ECOC 2011) [Details]

(2010) Optical Fiber Communications Conference (OFC 2010)

Antony, Cleitus and Ossieur, Peter and Clarke, Aisling M and Naughton, Alan and Krimmel, Heinz-Georg and Chang, Y Frank and Borghesani, Anna and Moodie, David and Poustie, Alistair and Wyatt, Richard and others (2010) Demonstration of a carrier distributed, 8192-split hybrid DWDM-TDMA PON over 124km field-installed fibers Optical Fiber Communications Conference (OFC 2010) [Details]

(2010) Access Networks and In-house Communications

Bauwelinck, Johan and Antony, Cleitus and Bonada, Francesc and Caballero, Antonio and Chatzi, Sotiria and Clarke, Aisling M and Costa, Liliana Nicolau and Forzati, Marco and Lazaro, Jose A and Maziotis, Alexandros and others (2010) Optical line terminal and remote node sub-systems of next-generation access networks [Invited] Access Networks and In-house Communications [Details]

(2010) Access Networks and In-house Communications

Townsend, Paul and Ossieur, Peter and Antony, C and Naughton, A and Clarke, AM and Davey, RP and Krimmel, HG and De Ridder, Tine and Qiu, Xing-Zhi and Melange, C and others (2010) European research project PIEMAN [Invited] Access Networks and In-house Communications [Details]

(2010) Optical Fiber Communications Conference (OFC 2010)

Ossieur, Peter and Antony, Cleitus and Naughton, Alan and Clarke, Aisling and Townsend, Paul D and Krimmel, Heinz-Georg and De Ridder, Tine and Qiu, Xing-Zhi and Melange, Cedric and Borghesani, Anna and others (2010) A symmetric 320Gb/s capable, 100km extended reach hybrid DWDM-TDMA PON Optical Fiber Communications Conference (OFC 2010) [Details]

(2010) Optical Fiber Communications Conference (OFC 2010)

I. P. Choi and P. D. Townsend (2010) Quantum Key Distribution on a 10Gb/s WDM-PON [Invited] Optical Fiber Communications Conference (OFC 2010) [Details]

(2009) International Conference on Photonics in Switching

Smolorz, S and Rohde, H and Ossieur, Peter and Antony, Cleitus and Townsend, Paul D and De Ridder, Tine and Baekelandt, Bart and Qiu, Xing-Zhi and Appathurai, S and Krimmel, HG and others (2009) Next generation access networks: PIEMAN and beyond [Invited] International Conference on Photonics in Switching , pp.196-199 [Details]

(2009) Optical Fiber Communication Conference

Ossieur, Peter and De Ridder, Tine and Bauwelinck, Johan and M\’elange, Cedric and Baekelandt, Bart and Qiu, Xing-Zhi and Vandewege, Jan and Talli, Giuseppe and Antony, Cleitus and Townsend, Paul and others (2009) A 10 Gb/s burst-mode receiver with automatic reset generation and burst detection for extended reach PONs Optical Fiber Communication Conference [Details]

(2009) Photonics Ireland

H. N. J. Fernando, J. H. Song, A. Biavati, P. D. Townsend, P. O¿Brien and F. H. Peters; (2009) Design, Fabrication, Characterization & Packaging of Photonic Integrated Circuits for Quantum Key Distribution Systems Photonics Ireland Kinsale, Ireland, [Details]

(2009) ECOC 2009

Antony, C and Ossieur, P and Talli, G and Townsend, PD and Krimmel, HG and Poustie, A and Wyatt, R and Harmon, B and Lealman, I and Maxwell, G and others (2009) Upstream burst-mode operation of a 100km reach, 16 x 512 split hybrid DWDM-TDM PON using tuneable external cavity lasers at the ONU-side ECOC 2009 [Details]

(2009) Optical Fiber Communication Conference

MacHale, Eimear K and Talli, Giuseppe and Townsend, Paul D and Borghesani, Anna and Lealman, Ian and Moodie, David G and Smith, David W (2009) Signal-induced Rayleigh noise reduction using gain saturation in an integrated R-EAM-SOA Optical Fiber Communication Conference [Details]

(2009) Optical Fiber Communication Conference

Antony, Cleitus and Talli, Giuseppe and Townsend, Paul D (2009) SOA based upstream packet equalizer in 10Gb/s extended-reach PONs Optical Fiber Communication Conference [Details]

(2009) Conference on Lasers and Electro-Optics/Pacific Rim

Buller, GS and Collins, RJ and Clarke, PJ and Fernandez, V and Gordon, KJ and Hiskett, PA and Townsend, PD (2009) Gigahertz quantum key distribution networks Conference on Lasers and Electro-Optics/Pacific Rim [Details]

(2009) Photonics Ireland 2009 Conference 2009

Ossieur, Peter and De Ridder, Tine and Antony, Cleitus and M\’elange, Cedric and Baekelandt, Bart and Qiu, Xing-Zhi and Ford, Colin and Townsend, Paul D (2009) Demonstration of a 5-Gb/s burst-mode receiver for optically amplified PON systems Photonics Ireland 2009 Conference 2009 [Details]

(2008) Optical Communication, 2008. ECOC 2008. 34th European Conference on

MacHale, EK and Talli, G and Townsend, PD and Borghesani, A and Lealman, I and Moodie, DG and Smith, DW (2008) Extended-reach PON employing 10Gb/s integrated reflective EAM-SOA Optical Communication, 2008. ECOC 2008. 34th European Conference on , pp.1-3 [Details]

(2008) Optical Internet, 2008. COIN 2008. 7th International Conference on

Townsend, PD and Talli, G and MacHale, EK and Antony, C (2008) Long reach PONs [Invited] Optical Internet, 2008. COIN 2008. 7th International Conference on , pp.1-2 [Details]

(2007) Optics East 2007, Proceedings of SPIE, the International Society for Optical Engineering

Fernandez, V and Collins, RJ and Gordon, KJ and Townsend, PD and Buller, GS (2007) Gigahertz-clocked quantum key distribution in passive optical networks Optics East 2007, Proceedings of SPIE, the International Society for Optical Engineering [Details]

(2007) ECOC 2007

MacHale, EK and Talli, G and Chow, CW and Townsend, PD (2007) Reduction of Signal-Induced Rayleigh Noise in a 10Gb/s WDM-PON using a Gain-Saturated SOA ECOC 2007 [Details]

(2007) Optics East 2007

Fernandez, Veronica and Collins, Robert J and Gordon, Karen J and Townsend, Paul D and Buller, Gerald S (2007) Gigahertz-clocked quantum key distribution in passive optical networks Optics East 2007 , pp.678004-678004 [Details]

(2007) Conference on Lasers and Electro-Optics

Chow, CW and Talli, G and Ellis, AD and Townsend, PD (2007) CSS-AMPSK for Rayleigh Noise Mitigation in PONs Conference on Lasers and Electro-Optics [Details]

(2007) IEEE LEOS Anual Meeting

TOWNSEND, P and Talli, G and CHOW, C and MACHALE, E and Anthony, C and Davey, R and De Ridder, Tine and Qiu, Xing-Zhi and Ossieur, Peter and KRIMMEL, H and others (2007) Long reach passive optical networks [Invited] IEEE LEOS Anual Meeting [Details]

(2007) Optical Fiber Communication Conference

Talli, G and Chow, CW and Townsend, PD (2007) Filter impact in spectrally-broadened Rayleigh noise reduction schemes for DWDM-PONs Optical Fiber Communication Conference [Details]

(2007) European Conference on Optical Communications (ECOC 2007)

Talli, Giuseppe and Chow, C and Townsend, Paul and Davey, Russell and De Ridder, Tine and Qiu, Xing-Zhi and Ossieur, Peter and Krimmel, H and Smith, David and LEALMAN, D and others (2007) Integrated metro and access network: PIEMAN [Invited] European Conference on Optical Communications (ECOC 2007) , pp.493-500 [Details]

(2006) Optics East 2006

Choi, Iris PS and Fernando, Harendra NJ and Townsend, Paul D and Wahl, Michael (2006) Application of a new time-correlated single photon counting instrument in a fiber-based quantum cryptography system Optics East 2006 , pp.637210-637210 [Details]

(2006) Optical Fiber Communication Conference

MacHale, Eimear K and Talli, Giuseppe and Townsend, Paul D (2006) 10Gb/s bidirectional transmission in a 116km Reach Hybrid DWDM-TDM PON Optical Fiber Communication Conference [Details]

(2006) 11th European Conference on Networks \& Optical Communications (NOC), Invited Paper, Berlin, Germany

Townsend, PD and Talli, Giuseppe and Chow, Chi Wai and MacHale, Eimear (2006) 10 Gbps hybrid WDM-TDM long reach PONs [Invited] 11th European Conference on Networks \& Optical Communications (NOC), Invited Paper, Berlin, Germany [Details]

(2006) European Conference on Optical Communication, Cannes, France

Talli, G and Chow, CW and MacHale, EK and Townsend, PD (2006) High split ratio 116 km reach hybrid DWDM-TDM 10Gb/s PON employing R-ONUs European Conference on Optical Communication, Cannes, France , pp.24-28 [Details]

(2006) Proceedings of BroadBand Europe Conference

Davey, Russell and De Ridder, Tine and Qiu, Xing-Zhi and Ossieur, Peter and Krimmel, H and Smith, David and Lealman, L and Poustie, Alistair and Talli, Giuseppe and Chow, C and others (2006) Progress in IST project PIEMAN towards a 10 Gbit/s, multi-wavelength long reach PON [Invited] Proceedings of BroadBand Europe Conference [Details]

(2005) Optical Fiber Communication Conference

Talli, Giuseppe and Townsend, Paul D (2005) Feasibility demonstration of 100km reach DWDM SuperPON with upstream bit rates of 2.5 Gb/s and 10Gb/s Optical Fiber Communication Conference [Details]

(2005) Microtechnologies for the New Millennium 2005

Fernandez, Veronica and Gordon, Karen J and Collins, Robert J and Townsend, Paul D and Cova, Sergio D and Rech, Ivan and Buller, Gerald S (2005) Quantum key distribution in a multi-user network at gigahertz clock rates Microtechnologies for the New Millennium 2005 , pp.720-727 [Details]

(2005) OPTO-Ireland

Talli, Giuseppe and Townsend, Paul D (2005) 100km reach DWDM SuperPON with upstream bit rates of 2.5 Gb/s and 10Gb/s OPTO-Ireland , pp.510-517 [Details]

(2005) European Conference on Optical Communications (ECOC 2005)

Buller, GS and Gordon, KJ and Fernandez, V and Collins, RJ and Pellegrini, S and Cova, SD and Townsend, PD (2005) An Approach to High Key Exchange Rate Quantum Key Distribution in Optical Fibres European Conference on Optical Communications (ECOC 2005) Edinburgh, , pp.63-66 [Details]

(2004) International Quantum Electronics Conference

Gordon, Karen J and Fernandez, Veronica and Buller, Gerald S and Townsend, Paul D and Cova, Sergio D and Tisa, Simone (2004) A quantum key distribution system operating at gigahertz clock rates International Quantum Electronics Conference [Details]

(2005) CLEO Pacific Rim

Gordon, KJ and Fernandez, V and Collins, RJ and Buller, GS and Rech, I and Cova, SD and Townsend, PD (2005) 3.3 Gigahertz Clocked Quantum Key Distribution System CLEO Pacific Rim [Details]

(2002) Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002

Healey, P and Townsend, P and Ford, C and Johnston, L and Townley, P and Lealman, I and Rivers, L and Perrin, S and Moore, R (2002) Reflective SOAs for spectrally sliced WDM-PONs Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002 , pp.352-353 [Details]

(1999) Lasers and Electro-Optics, 1999. CLEO/Pacific Rim’99. The Pacific Rim Conference on

Maxwell, Graeme D and Townsend, P and Lear, K and Harlow, M and Cecil, R (1999) The use of planar silica waveguide technology in quantum cryptography systems Lasers and Electro-Optics, 1999. CLEO/Pacific Rim’99. The Pacific Rim Conference on , pp.589-590 [Details]

(1998) Aerospace/Defense Sensing and Controls

Townsend, Paul D (1998) Quantum cryptography on optical fiber networks Aerospace/Defense Sensing and Controls , pp.2-13 [Details]

(1994) International Quantum Electronics Conference

Townsend, Paul D (1994) Quantum key distribution over 10 km of optical fiber International Quantum Electronics Conference [Details]

(1990) 33rd Annual Techincal Symposium

Townsend, Paul D and Baker, Gregory L and Jackel, Janet L and Shelburne III, JA and Etemad, Shahab (1990) Polydiacetylene-based directional couplers and grating couplers: Linear and nonlinear transmission properties and all-optical switching phenomena 33rd Annual Techincal Symposium , pp.256-264 [Details]

(1988) 32nd Annual Technical Symposium

Jackel, JL and Schlotter, NE and Townsend, PD and Baker, GL and Etemad, S (1988) Composite channel waveguides using ion-exchanged glass and optically nonlinear polymers 32nd Annual Technical Symposium , pp.239-244 [Details]

(1989) Nonlinear optical properties of organic materials II

Townsend, PD and Baker, GL and Jackel, JL and Shelburne, JA and Etemad, S (1989) Nonlinear Switching in Polydiacetylene Waveguide Devices Nonlinear optical properties of organic materials II [Details]

Other
YearPublication
(2011) AN OPTICAL COMMUNICATION SYSTEM.

Talli, Giuseppe and Ellis, Andrew and Townsend, Paul and Chow, Chi Wai (2011) AN OPTICAL COMMUNICATION SYSTEM. Other [Details]

(2008) OPTICAL COMMUNICATION SYSTEM.

Chow, Chi Wai and Talli, Giuseppe and Ellis, Andrew and Townsend, Paul (2008) OPTICAL COMMUNICATION SYSTEM. Other [Details]

Professional
Honours and Awards
YearTitleAwarding Body
2012Research Professorship, UCC UCC
1986College Fellow, St John’s College, University of Cambridge UK St John’s College, University of Cambridge, UK
1999Honorary Professorship, Heriot-Watt University, Edinburgh School of Engineering and Physical Sciences, Heriot-Watt University
1983Highest Marks in Finals Prize Physics Department, University of East Anglia
1997Elected Institute of Physics Fellow Institute of Physics (UK)
Professional Associations
AssociationFunctionFrom / To
Fellow, Institute of PhysicsFellow01-JUN-97 / 03-SEP-14
Chartered Physicist, Institute of PhysicsProfessional Physicist01-JUN-97 /
Member, Institute of Electrical and Electronics EngineersMember01-JAN-03 / 03-SEP-14
Patents
Patent NumberTitleInventorGranted
123 I hold patents in 18 separate families with several more pending. Details can be found in ‘More Publications’ section Paul Townsend01-DEC-13
Committees
CommitteeFunctionFrom / To
Energy-Efficient Optical Fibre Communications Programme (Chalmers University, Sweden), Advisory Board Member2014 / 2017
Industrial Advisory Board, School of Engineering and Physics, Heriot-Watt University, EdinburghMember1999 / 2001
IPIC Executive Management CommitteeChair2012 / 2019
Centre for Advanced Photonics & Process Analysis (CAPPA) Industry Advisory CommitteeMember2010 / 2016
Tyndall Graduate Studies CommitteeMember2009 / 2014
Tyndall Executive Management TeamMember2008 / 2019
Employment
EmployerPositionFrom / To
Bell Communications Research (Bellcore)Postdoctoral Member of Research Staff (1987-1990)/
Corning Research Centre, UKResearch Associate and Group Leader (2000-2002)/
University College Cork and Tyndall National InstituteHead of Group (Tyndall) and Senior Research Fellow (Department of Physics) (2005-2008)/
British Telecom (BT)Senior Research Scientist (1990-1998)/
St John’s College, University of Cambridge, UKCollege Research Fellow (1986-1989)/
Corning Research Centre, UKAccess Product Manager (Strategic Growth Group), Research Associate and Group Leader (2002-2003)/
British Telecom (BT)Professional Member of Technical Staff (1998-2000)/
University College Cork /TyndallHead of Group (Tyndall), Senior Research Fellow (Department of Physics) (2005-2008)/
University College Cork and TyndallHead of Photonics Centre, Tyndall (2008-current)/
University College CorkSFI Principal Investigator and Senior Research Fellow (Depatment of Physics) (2003-2005)/
Education
YearInstitutionQualificationSubject
1986 University of Cambridge, UK PHDPhysics
1983 University of East Anglia, UK BSCPhysics
Teaching
Recent Postgraduates
Graduation YearStudent NameInstitutionDegree TypeThesis Title
2011Cleitus AntonyUCCBSC10Gb/s Burst Mode Transmission in Long Reach Passive Optical Networks
2014Stefano PortoUCCBSCBurst Mode Electronic Dispersion Compensation in Long Reach PONs
2013Nasir Abdul QuadirUCCBSCResearch and Design of High-Speed Advanced Analogue Front-Ends for Fibre-Optic Transmission Systems
2010Iris ChoiUCCBSCQuantum Key Distribution on Multi-User Optical Networks
2014Alan NaughtonUCCBSCAnalysis and Optimisation of Semiconductor Reflective Modulators for Optical Networks
Current Postgraduate Students
StudentDegree Type
Baig JoveriaDoctoral Degree
Murray Brian StephenDoctoral Degree
Dalla Santa MarcoDoctoral Degree
Lesmana TeddyDoctoral Degree
Mura EnricaDoctoral Degree
Ouyang XingDoctoral Degree
Carey Daniel MauriceDoctoral Degree
Zhou ShiyuDoctoral Degree
Kelly Denis BrendanDoctoral Degree
Collaborators
External Collaborators
NameOrganisation/ InstitutionCountry
Multiple – see publications for details