Switchable Polarization Beam Splitter Based on GST-on-Silicon Waveguides

Bohao Zhang; Weiwei Chen; Pengjun Wang; Shixun Dai; Weifeng Jiang; Wei Liang; Hao Lu; Jian Ding; Jun Li; Yan Li; Qiang Fu; Tingge Dai; Hui Yu; Jianyi Yang

doi:10.1109/JPHOT.2020.2977979

IEEE Photonics Journal (Jan 2020)

Switchable Polarization Beam Splitter Based on GST-on-Silicon Waveguides

Bohao Zhang,
Weiwei Chen,
Pengjun Wang,
Shixun Dai,
Weifeng Jiang,
Wei Liang,
Hao Lu,
Jian Ding,
Jun Li,
Yan Li,
Qiang Fu,
Tingge Dai,
Hui Yu,
Jianyi Yang

Affiliations

Bohao Zhang: Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Weiwei Chen: ORCiD; Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Pengjun Wang: College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou, China
Shixun Dai: ORCiD; Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Weifeng Jiang: ORCiD; College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
Wei Liang: Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Hao Lu: Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Jian Ding: Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Jun Li: Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Yan Li: ORCiD; Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Qiang Fu: Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China
Tingge Dai: ORCiD; Department of Information Science and Electronics Engineering and Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou, China
Hui Yu: ORCiD; Department of Information Science and Electronics Engineering and Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou, China
Jianyi Yang: Department of Information Science and Electronics Engineering and Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou, China

DOI: https://doi.org/10.1109/JPHOT.2020.2977979
Journal volume & issue: Vol. 12, no. 2
pp. 1 – 10

Abstract

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A switchable polarization beam splitter utilizing GST-on-silicon waveguides is introduced and comprehensively investigated in this paper. Based on the phase matching and mode hybridization, structural parameters of the presented device are optimized by using the particle swarm optimization algorithm and finite difference time domain method, so that the output fundamental transverse-electric (TE0) and transverse-magnetic (TM0) modes can be switched by controlling the phase state of GST and the device exhibits broad bandwidth, low crosstalk, and high polarization extinction ratio. For the designed device with the amorphous GST, the crosstalk is lower than -23.40 dB and the polarization extinction ratio is larger than 21.35 dB over the C-band. In the case of the crystalline GST, within the C-band, the crosstalk of less than -27.37 dB and the polarization extinction ratio of greater than 21.37 dB are achieved.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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