Temperature-tunable optical filter based on Fano resonance liquid-core microcapillary resonator

Jieqing Deng; Xiaozheng Tang; Xiangshang Zhu; Xu Wei; Zhong Fan; Chunlei Yu; Xiang Zhang; Lin Shi; Jidong Shi; Yu Lu; Yuejiang Song

doi:10.1117/12.2522967

14 February 2019 Temperature-tunable optical filter based on Fano resonance liquid-core microcapillary resonator

Jieqing Deng, Xiaozheng Tang, Xiangshang Zhu, Xu Wei, Zhong Fan, Chunlei Yu, Xiang Zhang, Lin Shi, Jidong Shi, Yu Lu, Yuejiang Song

Author Affiliations +

Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 110484S (2019) https://doi.org/10.1117/12.2522967
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China

Abstract

In this paper, we demonstrate a novel Fano resonance optical filter based on thin fiber taper coupled whispering gallery mode (WGM) liquid core microcapillary resonator, and such the filter comes from the narrow band transmission spectrum of Fano resonance. Due to the large thermos-optical coefficient of the liquid core, slight temperature change will greatly change the resonant wavelength. In addition, high order resonant modes are generated through thin fiber taper coupling. With their large intensity fraction in the liquid core, these modes achieve high sensitivity to refractive index change or temperature change of the liquid core. So this tunable filter has very large temperature tunable coefficient of about 0.4nm/K, which is far larger than other traditional methods.

Citation Download Citation

Jieqing Deng, Xiaozheng Tang, Xiangshang Zhu, Xu Wei, Zhong Fan, Chunlei Yu, Xiang Zhang, Lin Shi, Jidong Shi, Yu Lu, and Yuejiang Song "Temperature-tunable optical filter based on Fano resonance liquid-core microcapillary resonator", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110484S (14 February 2019); https://doi.org/10.1117/12.2522967

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