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27 March 2022 Ultra-compact and high-performance silicon mode (de)multiplexer based on a tapered bent asymmetric directional coupler
JunBo Zhu, HaiYang Huang, YingXuan Zhao, Yang Li, XiaoJuan She, Han Liao, Rui Huang, ZiJian Zhu, Xiang Liu, Zhen Sheng, FuWan Gan
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Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121693Z (2022) https://doi.org/10.1117/12.2623955
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China
Abstract
We propose and experimentally demonstrate the ultra-compact on-chip silicon mode (de)multiplexers [(De)MUXs] based on a tapered bent asymmetric direction coupler. By combining the advantages of tapered asymmetric directional coupler and bent directional coupler, low loss, broad bandwidth, and good robustness against fabrication variations can be obtained within ultra-compact coupling length. The coupling length of the proposed TE1-TE0 and TE2-TE0mode (de)multiplexers is less than 8.7 µm. Experimental results reveal that, over the wavelength range from 1.534 μm to 1.6 μm, the insertion loss is lower than 1.4 dB and 1.55 dB for the TE1-TE0 and TE2-TE0 mode multiplexing, respectively, and the crosstalk is lower than -10dB.
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JunBo Zhu, HaiYang Huang, YingXuan Zhao, Yang Li, XiaoJuan She, Han Liao, Rui Huang, ZiJian Zhu, Xiang Liu, Zhen Sheng, and FuWan Gan "Ultra-compact and high-performance silicon mode (de)multiplexer based on a tapered bent asymmetric directional coupler", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121693Z (27 March 2022); https://doi.org/10.1117/12.2623955
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KEYWORDS
Waveguides
Silicon
Directional couplers
Multiplexing
Phase matching
Polarization
Silicon photonics
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