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Published in: Photonic Network Communications 2/2020

29-08-2020 | Original Paper

Design of a 1 × 2 novel optical switch based on polarization converters and splitters

Authors: Liu Aichun, Fethallah Karim

Published in: Photonic Network Communications | Issue 2/2020

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Abstract

In this paper, a 1 × 2 optical switch based on two TE/TM polarization converters, one 1 × 2-polarization beam splitter and a hybrid 2 × 2-polarization beam splitter/combiner is designed and discussed. The novelty of this work resides in the design of a 2 × 2-hybrid polarization beam combiner/splitter, operating as a 2 × 2 polarization optical switch through the combining and the splitting of polarized signals issued from two TE/TM polarization controllers. The novel hybrid splitter/combiner can route an optical signal either to a bar or a cross port with an extinction ratio higher than 90 dB, thanks to the feature of polarization splitting used in this device to suppress undesired polarization states and minimize the polarization-dependent loss. We have used polarization beam converters to switch between two orthogonal modes in order to facilitate the routing of these signals through the 2 × 2-hybrid polarization splitter/combiner. We changed the polarization states of signals, in our simulation via OptiSystem, through polarization controllers, by modifying only their phase shifts between 0 rad and π rad. The proposed 1 × 2 optical switch presents an average insertion loss of 3.5 dB.
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Metadata
Title
Design of a 1 × 2 novel optical switch based on polarization converters and splitters
Authors
Liu Aichun
Fethallah Karim
Publication date
29-08-2020
Publisher
Springer US
Published in
Photonic Network Communications / Issue 2/2020
Print ISSN: 1387-974X
Electronic ISSN: 1572-8188
DOI
https://doi.org/10.1007/s11107-020-00904-w