Sun, X. et al. (2022) Monolithically integrated AlGaInAs MQW polarization mode converter using a stepped height ridge waveguide. IEEE Photonics Journal, 14(3), 6632606. (doi: 10.1109/JPHOT.2022.3176547)
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Abstract
An AlGaInAs multiple-quantum-well (MQW) polarization mode controller (PMC) using a stepped height ridge waveguide is presented, which is monolithically integrated with a sidewall grating distributed feedback laser using quantum well intermixing (QWI). QWI is used to create a 100 nm blueshift in the PMC and to eliminate the anisotropy and birefringence of the MQW structure. The PMC structure is modelled and optimized using a 3D full-vectorial Finite-Element Method package. The maximum polarization conversion efficiency (PCE) is around 96% for a 537-μm-long PMC operating a wavelength of 1550 nm. To maintain a PCE of ≥90%, the fabrication tolerances of the dry-etch corner and ridge waveguide widths are ± 0.05 μm and ± 0.03 μm respectively. The main advantages of the proposed design are that only a single step of MOPVE and two steps of dry etching are required for the whole integrated device, significantly reducing complexity and cost.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Liu, Professor Xuefeng and Cheng, Weiqing and Marsh, Professor John and Sun, Xiao and Hou, Dr Lianping and Ye, Dr Shengwei |
Authors: | Sun, X., Ye, S., Cheng, W., Liang, S., Huang, Y., Qiu, B., Li, Z., Xiong, J., Liu, X., Marsh, J. H., and Hou, L. |
College/School: | College of Science and Engineering > School of Engineering College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | IEEE Photonics Journal |
Publisher: | IEEE |
ISSN: | 1943-0655 |
ISSN (Online): | 1943-0655 |
Published Online: | 20 May 2022 |
Copyright Holders: | Copyright © 2022 The Authors |
First Published: | First published in IEEE Photonics Journal 14(3): 6632606 |
Publisher Policy: | Reproduced under a Creative Commons License |
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