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15 December 2022 Compact optical mode and polarization filtering devices based on subwavelength gratings on a lithium niobate on insulator platform
Xu Han, Li Chen, Yongheng Jiang, Andreas Frigg, Huifu Xiao, Thach Giang Nguyen, Andreas Boes, Jianhong Yang, Guanghui Ren, Yikai Su, Arnan Mitchell, Yonghui Tian
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Proceedings Volume 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022); 124783B (2022) https://doi.org/10.1117/12.2654818
Event: Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 2022, Xi'an, China
Abstract
We propose and demonstrate compact optical mode and polarization filtering devices on a lithium niobate on insulator (LNOI) platform. The subwavelength grating-based high-order mode pass filter and TM-pass polarizer are designed and experimentally demonstrated successfully. The measured insertion losses and extinction ratio at 1550 nm are lower than 1.9 dB and larger than 30 dB, respectively, while the device lengths are only about 50 μm.
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Xu Han, Li Chen, Yongheng Jiang, Andreas Frigg, Huifu Xiao, Thach Giang Nguyen, Andreas Boes, Jianhong Yang, Guanghui Ren, Yikai Su, Arnan Mitchell, and Yonghui Tian "Compact optical mode and polarization filtering devices based on subwavelength gratings on a lithium niobate on insulator platform", Proc. SPIE 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 124783B (15 December 2022); https://doi.org/10.1117/12.2654818
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KEYWORDS
Lithium niobate
Polarization
Polarizers
Waveguides
Photonic integrated circuits
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