P. D. Townsend

Research interests

Publications

• DISCUS: an end-to-end solution for ubiquitous broadband optical access

  IEEE Communications Magazine · 2014 · 10.1109/mcom.2014.6736741

• DISCUS: an end-to-end solution for ubiquitous broadband optical access

  IEEE Communications Magazine · 2014 · 10.1109/mcom.2014.6736741

• Quantum information to the home

  New Journal of Physics · 2011 · 10.1088/1367-2630/13/6/063039

• Quantum information to the home

  New Journal of Physics · 2011 · 10.1088/1367-2630/13/6/063039

• Quantum key distribution on a 10Gb/s WDM-PON

  Optics Express · 2010 · 10.1364/oe.18.009600

• Quantum key distribution on a 10Gb/s WDM-PON

  Optics Express · 2010 · 10.1364/oe.18.009600

• Hybrid DWDM-TDM long-reach PON for next-generation optical access

  Journal of Lightwave Technology · 2006 · 10.1109/jlt.2006.875952

• A short wavelength GigaHertz clocked fiber-optic quantum key distribution system

  IEEE Journal of Quantum Electronics · 2004 · 10.1109/jqe.2004.830182

• Spectral slicing WDM-PON using wavelength-seededreflective SOAs

  Electronics Letters · 2001 · 10.1049/el:20010786

• Performance and design of InGaAs/InP photodiodes for single-photon counting at 155 µm

  Applied Optics · 2000 · 10.1364/ao.39.006818

• Performance and design of InGaAs/InP photodiodes for single-photon counting at 155 µm

  Applied Optics · 2000 · 10.1364/ao.39.006818

• Controlled production of aligned-nanotube bundles

  Nature · 1997 · https://doi.org/10.1038/40369

• Simultaneous quantum cryptographic key distributionand conventional data transmission over installed fibre using wavelength-divisionmultiplexing

  Electronics Letters · 1997 · 10.1049/el:19970147

• Quantum cryptography on multiuser optical fibre networks

  Nature · 1997 · https://doi.org/10.1038/385047a0

• Quantum cryptography: How to beat the code breakers using quantum mechanics

  Contemporary Physics · 1995 · 10.1080/00107519508222150

• Multi-user Quantum Cryptography on Optical Networks

  Journal of Modern Optics · 1995 · 10.1080/09500349514551001

• Multi-user Quantum Cryptography on Optical Networks

  Journal of Modern Optics · 1995 · 10.1080/09500349514551001

• Quantum key distribution over distances as long as 30 km

  Optics Letters · 1995 · 10.1364/ol.20.001695

• An introduction to methods of periodic poling for second-harmonic generation

  Journal of Physics D Applied Physics · 1995 · 10.1088/0022-3727/28/9/001

• Quantum cryptography: How to beat the code breakers using quantum mechanics

  Contemporary Physics · 1995 · 10.1080/00107519508222150

• Secure key distribution system based on quantumcryptography

  Electronics Letters · 1994 · 10.1049/el:19940558

• Secure key distribution system based on quantumcryptography

  Electronics Letters · 1994 · 10.1049/el:19940558

• Annealing of ion implanted silver colloids in glass

  Journal of Applied Physics · 1993 · 10.1063/1.354194

• Single photon interference in 10 km long optical fibre interferometer

  Electronics Letters · 1993 · https://doi.org/10.1049/el:19930424

• Enhanced single photon fringe visibility in a 10 km-long prototype quantum cryptography channel

  Electronics Letters · 1993 · 10.1049/el:19930862

• Annealing of ion implanted silver colloids in glass

  Journal of Applied Physics · 1993 · 10.1063/1.354194

• Enhanced single photon fringe visibility in a 10 km-long prototype quantum cryptography channel

  Electronics Letters · 1993 · 10.1049/el:19930862

• An overview of ion-implanted optical waveguide profiles

  Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms · 1990 · 10.1016/0168-583x(90)90663-f

• An overview of ion-implanted optical waveguide profiles

  Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms · 1990 · 10.1016/0168-583x(90)90663-f

• Observation of nonlinear optical transmission and switching phenomena in polydiacetylene-based directional couplers

  Applied Physics Letters · 1989 · 10.1063/1.102179

• Observation of nonlinear optical transmission and switching phenomena in polydiacetylene-based directional couplers

  Applied Physics Letters · 1989 · 10.1063/1.102179

• Photo-excitation in conjugated polymers

  Journal of Physics D Applied Physics · 1987 · https://doi.org/10.1088/0022-3727/20/11/005

• Optical effects of ion implantation

  Reports on Progress in Physics · 1987 · https://doi.org/10.1088/0034-4885/50/5/001

• The formation of waveguides and modulators in LiNbO3 by ion implantation

  Journal of Applied Physics · 1979 · 10.1063/1.325982

• Sputtering patterns and defect formation in alkali halides

  Radiation Effects · 1976 · 10.1080/00337577608233516

• Sputtering patterns and defect formation in alkali halides

  Radiation Effects · 1976 · 10.1080/00337577608233516

• Investigation by Electron Tunneling of the Superconducting Energy Gaps in Nb, Ta, Sn, and Pb

  Physical Review · 1962 · 10.1103/physrev.128.591

Current projects

No projects listed.