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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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Optical beam former for phased arrays with independent control of radiated frequency and phase
TL;DR: In this paper, a beam forming technique for use in optically controlled phased arrays is presented, which is the optical equivalent of the microwave Huggins phase shifter, using two optical fiber networks to produce a beam having independently specified frequency and aperture phase slope.
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Terahertz probe for spectroscopy of sub-wavelength objects
TL;DR: A system of two probes is designed for terahertz (THz) time-domain spectroscopy of sub-wavelength size objects to be applied to single micrometer-size objects in the 1-2.5THz region.
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Multiple quantum well-tuned GaAs/AlGaAs laser
TL;DR: In this paper, the electrorefractive effect in a pin multiple-quantum-well (MQW) modulator has been used in a novel, electronically tuned, external-cavity GaAs/AlGaAs laser system.
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Tunable THz Signal Generation and Radio-Over-Fiber Link Based on an Optoelectronic Oscillator-Driven Optical Frequency Comb
G. K. M. Hasanuzzaman,Haymen Shams,Cyril C. Renaud,John E. Mitchell,Alwyn J. Seeds,Stavros Iezekiel +5 more
TL;DR: In this article, a tunable optoelectronic oscillator (OEO) was used to generate photonic THz signal in a radio over fiber (RoF) link.
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Understanding the Bandwidth Limitations in Monolithic 1.3 μ m InAs/GaAs Quantum Dot Lasers on Silicon
Constanze Hantschmann,Peter P. Vasil'ev,Adrian Wonfor,Siming Chen,Mengya Liao,Alwyn J. Seeds,Huiyun Liu,Richard V. Penty,Ian H. White +8 more
TL;DR: In this article, the authors present measurements and simulations of the small-signal modulation response of monolithic continuous-wave 1.3 μ m InAs/GaAs narrow ridge-waveguide laser on a silicon substrate.