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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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Proceedings ArticleDOI
CLONETS – Clock network services strategy and innovation for clock services over optical-fibre networks
Przemyslaw Krehlik,Lukasz Sliwczynski,Jiri Dostal,Jan Radil,Vladimir Smotlacha,Radek Velc,Josef Vojtech,Mauro Campanella,Davide Calonico,Cecilia Clivati,Filippo Levi,Ondrej Cip,Simon Rerucha,Ronald Holzwarth,Maurice Lessing,Fabiola Camargo,Bruno Desruelle,Jean Lautier-Gaud,Elizabeth Laier English,J. Kronjäger,Peter Whibberley,Paul-Eric Pottie,Richard Tavares,Philip Tuckey,Frantisek John,Milan Snajder,Jiri Stefl,Pawel Nogas,Robert Urbaniak,Artur Binczewski,Wojbor Bogacki,Krzysztof Turza,Gesine Grosche,Harald Schnatz,Emilie Camisard,Nicolas Quintin,Javier Diaz,Trinidad Garcia,Eduardo Ros,Alessandro Galardini,Alwyn J. Seeds,Zhen Yang,Anne Amy-Klein +42 more
TL;DR: Methods for long-distance time and frequency transfer over optical fibres have demonstrated excellent performances and are evolving rapidly, providing high-performance clock services to European research infrastructures and supporting wider services to industry and society.
Proceedings ArticleDOI
Optical phase lock loop as high-Q filter for optical frequency comb line selection
Katarzyna Balakier,Haymen Shams,Martyn J. Fice,Lalitha Ponnampalam,Chris Graham,Cyril C. Renaud,Alwyn J. Seeds +6 more
TL;DR: In this article, the first optical phase lock loop (OPLL) based on a photonic integrated circuit (PIC) fabricated using a generic foundry process and off-the-shelf electronic components was presented.
Transmission of 37.6-GHz OPSK Wireless Data Over 12.8-km Fiber With Remote Millimeter-Wave Local Oscillator
T. Ismail,C-P Liu,John E. Mitchell,Alwyn J. Seeds,Xin Qian,Adrian Wonfor,Richard V. Penty,Ian H. White +7 more
Journal ArticleDOI
Low threading dislocation density and antiphase boundary free GaAs epitaxially grown on on-axis Si (001) substrates.
Junjie Yang,Hui Jia,Huiwen Deng,Xuezhe Yu,Pamela Jurczak,Jae Seong Park,Shujie Pan,Wei Li,Siming Chen,Alwyn J. Seeds,Mingchu Tang,Huiyun Liu +11 more
TL;DR: In this paper , the mechanism of APB annihilation during the growth of GaAs on on-axis Si (001) is clarified, along with a detailed investigation of the interaction between threading dislocations and the periodic {110} APBs.
Proceedings ArticleDOI
An EBG enhancement to patch array antenna with integrated optical transducer
S. Tse,Xiaojing Wang,Yang Hao,Clive Parini,Chin-Pang Liu,C.H. Chuang,T. Ismail,Alwyn J. Seeds,Peter G. Huggard +8 more
TL;DR: In this paper, a two-by-two patch array is designed and manufactured with the enhancement of spiral EBG elements, which reduces the mutual coupling levels of the array by more than 5 dB at 5.24 GHz.