Stepped-height ridge waveguide MQW polarization mode converter monolithically integrated with sidewall grating DFB laser

Sun, X. et al. (2023) Stepped-height ridge waveguide MQW polarization mode converter monolithically integrated with sidewall grating DFB laser. Optics Letters, 48(2), pp. 359-362. (doi: 10.1364/OL.478765) (PMID:36638457)

Abstract

We report the first demonstration of a 1555 nm stepped-height ridge waveguide polarization mode converter monolithically integrated with a side wall grating distributed-feedback (DFB) laser using the identical epitaxial layer scheme. The device shows stable single longitudinal mode (SLM) operation with the output light converted from TE to TM polarization with an efficiency of >94% over a wide range of DFB injection currents (IDFB) from 140 mA to 190 mA. The highest TM mode purity of 98.2% was obtained at IDFB=180 mA. A particular advantage of this device is that only a single step of metalorganic vapor-phase epitaxy and two steps of III-V material dry etching are required for the whole integrated device fabrication, significantly reducing complexity and cost.

• Item Type: Articles
• Additional Information: This work was supported by the U.K. Engineering and Physical Sciences Research Council (EP/R042578/1) and the Chinese Ministry of Education collaborative project (B17023).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Liu, Professor Xuefeng and Hou, Dr Lianping and Cheng, Weiqing and Marsh, Professor John and Sun, Xiao and Ye, Dr Shengwei
• Authors: Sun, X., Cheng, W., Liang, S., Ye, S., Huang, Y., Zhang, R., Qiu, B., Xiong, J., Liu, X., 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: Optical Society of America
• ISSN: 0146-9592
• ISSN (Online): 1539-4794
• Published Online: 06 December 2022
• Copyright Holders: Copyright © 2022 Optica Publishing Group
• First Published: First publis48(2): 359-362
• 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