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

被引：10

作者：

Zhang, Bohao ^{[1
]}

Chen, Weiwei ^{[1
]}

Wang, Pengjun ^{[1
,2
]}

Dai, Shixun ^{[1
,6
]}

Jiang, Weifeng ^{[5
]}

Liang, Wei ^{[1
]}

Lu, Hao ^{[1
]}

Ding, Jian ^{[1
]}

Li, Jun ^{[1
]}

Li, Yan ^{[1
]}

Fu, Qiang ^{[1
]}

Dai, Tingge ^{[3
,4
]}

Yu, Hui ^{[3
,4
]}

Yang, Jianyi ^{[3
,4
]}

机构：

[1] Ningbo Univ, Fac Elect Engn & Comp Sci, Ningbo 315211, Peoples R China

[2] Wenzhou Univ, Coll Elect & Elect Engn, Wenzhou 325035, Peoples R China

[3] Zhejiang Univ, Dept Informat Sci & Elect Engn, Hangzhou 310027, Peoples R China

[4] Zhejiang Univ, Cyrus Tang Ctr Sensor Mat & Applicat, Hangzhou 310027, Peoples R China

[5] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Peoples R China

[6] Ningbo Univ, Lab Infrared Mat & Devices, Res Inst Adv Technol, Ningbo 315211, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2020年 / 12卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Switchable polarization beam splitter; GST-on-silicon waveguide; Particle swarm optimization algorithm; PHASE-CHANGE MATERIALS; PHOTONICS;

D O I：

10.1109/JPHOT.2020.2977979

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

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 (TE) and transverse-magnetic (TM) 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 dB and the polarization extinction ratio is larger than 21.35dB over the C-band. In the case of the crystalline GST, within the C-band, the crosstalk of less than 27.37dB and the polarization extinction ratio of greater than 21.37dB are achieved.

引用

页数：11

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