Millimeter-wave generation based on a monolithic dual-wavelength DFB laser with four phase-shifted sampled gratings and equivalent chirp technology

Yuan, B. et al. (2023) Millimeter-wave generation based on a monolithic dual-wavelength DFB laser with four phase-shifted sampled gratings and equivalent chirp technology. Optics Letters, 48(19), pp. 5093-5096. (doi: 10.1364/OL.504585) (PMID:37773393)

Abstract

A dual-wavelength DFB laser array based on four phase-shifted grating and equivalent chirp technology is first proposed, fabricated, and experimentally demonstrated. The dual-wavelength emitting is achieved by symmetrically introducing two π phase shifts into a chirped four phase-shifted sampled grating cavity. Meanwhile, the beating signal of the dual-wavelength output is stabilized by applying an electro-absorption modulator integrated at the rear of the cavity. Under different grating chirp rates, a series of RF signals from 66.8 GHz to 73.6 GHz with a linewidth of less than 210 kHz is obtained.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: ZHU, Simeng and FAN, YIZHE and Cheng, Weiqing and Marsh, Professor John and Akbar, Mr Jehan and Yuan, Bocheng and Hou, Dr Lianping and Ye, Dr Shengwei
• Authors: Yuan, B., Fan, Y., Zhu, S., Cheng, W., Zhang, Y., Chen, X., Ye, S., Liang, S., Huang, Y., Zhang, R., Akbar, J., Marsh, J. H., and Hou, L.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Optics Letters
• Publisher: Optica
• ISSN: 0146-9592
• ISSN (Online): 1539-4794
• Published Online: 12 September 2023
• Copyright Holders: Copyright © 2023 Optica Publishing Group
• First Published: First published in Optics Letters 48(19): 5093-5096
• 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