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27 March 2022 Coupling characterizes of spatial modes in photonic crystal nanobeam cavity
Fujun Sun, Yan Yang, Zhihua Li, Huiping Tian, Chengkuo Lee
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Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 1216933 (2022) https://doi.org/10.1117/12.2623553
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China
Abstract
Integrated silicon photonics is recognized as a potential candidate to achieve on-chip optical interconnects. Compared with other optical microcavities, photonic crystal nanobeam cavity (PCNC) has emerged as a promising platform for optical filtering, lasering, optical modulation/switching and sensing, due to their attractive properties of ultra-high Q/V and ultra-compact footprints. While numerous PCNCs focus on the characterizes of single air or dielectric mode, the cavity confining both air and dielectric modes has not yet been fully exploited. Here, we demonstrate experimentally the coupling characterizes of spatial modes in PCNC with two side coupling configurations. Experimental results show that arc waveguide side coupling PCNC supporting both air and dielectric modes with low insertion loss and high quality factors are achieved, compared with in-line coupling and parallel waveguide side coupling.
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Fujun Sun, Yan Yang, Zhihua Li, Huiping Tian, and Chengkuo Lee "Coupling characterizes of spatial modes in photonic crystal nanobeam cavity", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 1216933 (27 March 2022); https://doi.org/10.1117/12.2623553
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KEYWORDS
Waveguides
Photonic crystals
Silicon
Silicon photonics
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