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)

Abstract

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).
• Status: Published
• Refereed: Yes
• 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: 0146-9592
• 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

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
302617		Optically controlled THz phased array antennas	John Marsh	Engineering and Physical Sciences Research Council (EPSRC)	EP/R042578/1	ENG - Electronics & Nanoscale Engineering