Polarization-insensitive thermo-optic Mach–Zehnder switches on silicon
Polarization-insensitive photonic switches are crucial for the case with random polarization states encountered in optical systems. In this paper, we propose and demonstrate a polarization-insensitive 2 × 2 thermo-optic Mach-Zehnder switch (PIMZS) on a 340-nm silicon-on-insulator (SOI) platform by incorporating low-loss polarization-insensitive multimode interference (PIMMI) couplers whose core width is varied optimally. The fabricated 2 × 2 PIMZS exhibits a low excess loss of 0.15-0.79 dB and a high extinction ratio of >24 dB for both polarizations, and low polarization-dependent loss (PDL) of <0.47 dB is achieved across the C-band.
Authors
- Daoxin Dai (ORCID: https://orcid.org/0000-0002-2769-3009)
- Yaocheng Shi (ORCID: https://orcid.org/0000-0003-4489-8310)
- Lijia Song (ORCID: https://orcid.org/0000-0002-2494-3420)
- Huan Li (ORCID: https://orcid.org/0000-0002-8749-0385)
- Ting Chen
- Weixi Liu (ORCID: https://orcid.org/0000-0002-9070-8584)
- Chengfeng Wen
- Xiaomin Jiao
Institutions
- Zhejiang University (CN)
Publication Details
- Journal
- Optics Letters
- Published
- 2024-11-15
- DOI
- https://doi.org/10.1364/ol.542161
- Citations
- 5
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities
- Startup Foundation for Hundred-Talent Program of Zhejiang University
- Natural Science Foundation of Zhejiang Province