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Alwyn J. Seeds
Researcher at University College London
Publications - 466
Citations - 12674
Alwyn J. Seeds is an academic researcher from University College London. The author has contributed to research in topics: Laser & Photonics. The author has an hindex of 50, co-authored 454 publications receiving 11208 citations. Previous affiliations of Alwyn J. Seeds include Alcan & Queen Mary University of London.
Papers
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Millimetre-wave Gigabit/s Wireless-over-Fibre Transmission Using Low Cost Uncooled Devices with Remote Local Oscillator Delivery
TL;DR: In this article, the first gigabit/s modulated wireless data transmission using uncooled directly modulated lasers for low cost solution with remote millimetre-wave 40 GHz LO is achieved for downlink and uplink.
Patent
Photodetector including multiple waveguides
TL;DR: In this paper, an active waveguide structure with an absorber for converting photons conveying an optical signal into charge carriers conveying a corresponding electrical signal was proposed, and a carrier collection layer for transporting the charge carriers.
Journal ArticleDOI
Nitrogen ion implanted InP based photo-switch
TL;DR: Results confirm that using high energy nitrogen ion implantation to create EL-2 type trapping levels produces a photocarrier recombination time of a few picoseconds, resulting in a reduced peak pulse power requirement to switch the Indium Phosphide-based device.
Proceedings ArticleDOI
Millimetre-wave over fibre transmission using a BPSK reference-modulated optical injection phase-lock loop
TL;DR: In this article, a reference-modulated optical injection phase-lock loop was used to generate sideband millimetre-wave modulated optical signals by a reference modulated Optical Injection Phase-Lock loop.
Proceedings ArticleDOI
High-dynamic-range linear analog data links (1-20 GHz) using room temperature DFB laser diodes
Ian H. White,P. Hartmann,J. D. Ingham,Matthew P. Webster,D. Wake,Adrian Wonfor,Richard V. Penty,Alwyn J. Seeds,J. Kenton White +8 more
TL;DR: In this article, the authors report the analysis and application of uncooled, directly-modulated high-speed DFB lasers with emphasis on their analogue transmission performance and show that the link performance is assessed by using 3GPP W-CDMA and IEEE 802.11b signals.