1.55-µm sidewall grating DFB lasers integrated with a waveguide crossing for an optical beam forming network

Ye, S. et al. (2023) 1.55-µm sidewall grating DFB lasers integrated with a waveguide crossing for an optical beam forming network. IEEE Photonics Technology Letters, 35(14), pp. 785-788. (doi: 10.1109/LPT.2023.3278880)

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By using asymmetric twin-waveguide technology, a 1.55-μm sidewall grating distributed feedback laser monolithically integrated with a passive waveguide crossing was for the first time demonstrated for an optical beam forming network, which needs only one metalorganic vapor-phase epitaxy step. The distributed feedback laser with uncoated facets presents a side-mode suppression ratio of >44 dB and a low 3-dB linewidth of 68 kHz. An elliptical parabolic taper waveguide crossing had a theoretical crosstalk suppression ratio of 40 dB, while the measured cross-talk suppression ratio was at least 20 dB.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Watson, Dr Scott and Marsh, Professor John and Sun, Xiao and Yuan, Bocheng and Kelly, Professor Anthony and Hou, Dr Lianping and Ye, Dr Shengwei and Read, Peter and Maidment, Pierre
Authors: Ye, S., Sun, X., Yuan, B., Read, P., Maidment, P., Huang, Y., Zhang, R., Watson, S., Kelly, A., Marsh, J. H., and Hou, L.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Photonics Technology Letters
ISSN (Online):1941-0174
Published Online:22 May 2023
Copyright Holders:Copyright © 2023 IEEE
First Published:First published in IEEE Photonics Technology Letters 35(14):785 - 788
Publisher Policy:Reproduced with the permission of the Publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
302617Optically controlled THz phased array antennasJohn MarshEngineering and Physical Sciences Research Council (EPSRC)EP/R042578/1ENG - Electronics & Nanoscale Engineering