Design of 2 μm Wavelength Polarization Mode Controllers

Xie, S., Andersson, S. M.L., Ye, S. , Niu, Z., Marsh, J. H. and Hou, L. (2020) Design of 2 μm Wavelength Polarization Mode Controllers. In: 5th International Conference on the UK-China Emerging Technologies (UCET 2020), Glasgow, UK, 20-21 Aug 2020, ISBN 9781728194882 (doi: 10.1109/UCET51115.2020.9205487)

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A single-slot waveguide for transverse electric (TE) to transverse magnetic (TM) mode conversion operating at wavelengths around 2 μm is proposed based on an InGaSb/AlGaAsSb quantum well structure. The polarization mode convertor has a deep-etched ridge waveguide and a single shallow-etched slot, and can be fabricated in a single stage of dry-etching. The dependence of polarization conversion efficiency on slot width, slot position, slot depth and waveguide length was investigated, and a design that was insensitive to fabrication tolerances was identified. A TE-TM mode conversion efficiency of more than 97% can be obtained in a 2141-μm-long waveguide.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Andersson, Sia and Marsh, Professor John and Xie, Shengwen and Hou, Dr Lianping and Ye, Dr Shengwei
Authors: Xie, S., Andersson, S. M.L., Ye, S., Niu, Z., Marsh, J. H., and Hou, L.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Copyright Holders:Copyright © 2020 IEEE
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
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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