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

IEEE Photonics Journal

卷:12

Pengjun Wang¹  Weifeng Jiang²  Hui Yu³  Jianyi Yang³  Tingge Dai³  Shixun Dai⁴  Jian Ding⁴  Jun Li⁴  Hao Lu⁴  Bohao Zhang⁴  Wei Liang⁴  Weiwei Chen⁴  Qiang Fu⁴  Yan Li⁴ 

[1] College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou, China;

[2] College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China;

[3] Department of Information Science and Electronics Engineering and Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou, China;

[4] Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, China;

关键词: Switchable polarization beam splitter;    GST-on-silicon waveguide;    Particle swarm optimization algorithm.;   

DOI  :  10.1109/JPHOT.2020.2977979

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown