DFB laser array based on four phase-shifted sampled Bragg grating with precise wavelength control

Sun, Y. et al. (2022) DFB laser array based on four phase-shifted sampled Bragg grating with precise wavelength control. Optics Letters, 47(23), pp. 6237-6240. (doi: 10.1364/OL.475909)

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A four-laser array based on sampled Bragg grating distributed feedback (DFB) lasers in which each sampled period contains four phase-shift sections is proposed, fabricated, and experimentally demonstrated. The wavelength spacing between adjacent lasers is accurately controlled to 0.8 nm ± 0.026 nm and the lasers have single mode suppression ratios larger than 50 dB. Using an integrated semiconductor optical amplifier, the output power can reach 33 mW and the optical linewidth of the DFB lasers can be as narrow as 64 kHz. This laser array uses a ridge waveguide with sidewall gratings and needs only one metalorganic vapor-phase epitaxy (MOVPE) step and one III-V material etching process, simplifying the whole device fabrication process, and meeting the requirements of dense wavelength division multiplexing systems.

Item Type:Articles
Additional Information:Engineering and Physical Sciences Research Council (EP/R042578/1); Chinese Ministry of Education Collaborative Project (B17023).
Glasgow Author(s) Enlighten ID:Sun, Yiming and FAN, YIZHE and Cheng, Weiqing and Marsh, Professor John and Sun, Xiao and Yuan, Bocheng and Hou, Dr Lianping and Ye, Dr Shengwei
Authors: Sun, Y., Yuan, B., Sun, X., Liang, S., Huang, Y., Zhang, R., Ye, S., Fan, Y., Cheng, W., Marsh, J., and Hou, L.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN (Online):1539-4794
Published Online:04 November 2022
Copyright Holders:Copyright © 2022 The Authors
First Published:First published in Optics Letters 47(23):6237-6240
Publisher Policy:Reproduced under a Creative Commons License

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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