Non-volatile optical switch based on Sb<sub>2</sub>Se<sub>3</sub>-loaded three-mode interference
In this Letter, we propose a non-volatile switch based on multimode interference in an Sb<sub>2</sub>Se<sub>3</sub>-loaded waveguide. By implementing low-loss phase control within a multimode interference coupler, this design effectively manages the self-imaging phase shift length during a single phase change cycle. The fabricated multiplexed optical switch exhibits impressive performance characteristics, including a low insertion loss of ∼ 1.5 dB, a compact length of ∼35 μm, and minimal cross talk below -6 dB over a 35 nm bandwidth for both the amorphous and crystalline states. The ability to reconfigure light routing via Sb<sub>2</sub>Se<sub>3</sub> phase transitions opens new avenues for optical field-programmable gate arrays and high-density photonic processors.
Authors
- Lei Yang (ORCID: https://orcid.org/0000-0001-8297-0868)
- Hongtao Lin (ORCID: https://orcid.org/0000-0001-7432-3644)
- Xiaolong Liu (ORCID: https://orcid.org/0000-0001-6818-5417)
- Wei Zhang (ORCID: https://orcid.org/0000-0002-3234-8250)
- Tao Yang (ORCID: https://orcid.org/0000-0002-3691-3819)
- Kai Xu (ORCID: https://orcid.org/0000-0001-5478-1517)
- Peiqiang Xu
- Xinxin Zhao (ORCID: https://orcid.org/0000-0001-5352-9969)
Institutions
- Ningbo University (CN)
- Chinese Academy of Sciences (CN)
- National Engineering Research Center of Electromagnetic Radiation Control Materials (CN)
- Shanghai Institute of Microsystem and Information Technology (CN)
- Zhejiang University (CN)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-05-27
- DOI
- https://doi.org/10.1364/ol.560265
- Primary Topic
- Phase-change materials and chalcogenides
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Ningbo
- K. C. Wong Magna Fund in Ningbo University
- Natural Science Foundation of Zhejiang Province