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Temperature-tunable optical filter based on Fano resonance liquid-core microcapillary resonator
Author(s): Jieqing Deng; Xiaozheng Tang; Xiangshang Zhu; Xu Wei; Zhong Fan; Chunlei Yu; Xiang Zhang; Lin Shi; Jidong Shi; Yu Lu; Yuejiang Song
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Paper 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.

Paper Details

Date Published: 14 February 2019
PDF: 4 pages
Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110484S (14 February 2019); doi: 10.1117/12.2522967
Show Author Affiliations
Jieqing Deng, State Grid Jiangsu Electric Power Co., Ltd. (China)
Xiaozheng Tang, State Grid Jiangsu Electric Power Maintenance Branch Co., Ltd. (China)
Xiangshang Zhu, Nanjing Univ. (China)
Xu Wei, State Grid Jiangsu Electric Power Co., Ltd. (China)
Zhong Fan, State Grid Jiangsu Electric Power Co., Ltd. (China)
Chunlei Yu, State Grid Jiangsu Electric Power Maintenance Branch Co., Ltd. (China)
Xiang Zhang, State Grid Jiangsu Electric Power Maintenance Branch Co., Ltd. (China)
Lin Shi, State Grid Jiangsu Electric Power Maintenance Branch Co., Ltd. (China)
Jidong Shi, State Grid Jiangsu Electric Power Maintenance Branch Co., Ltd. (China)
Yu Lu, Nanjing Univ. (China)
Yuejiang Song, Nanjing Univ. (China)


Published in SPIE Proceedings Vol. 11048:
17th International Conference on Optical Communications and Networks (ICOCN2018)
Zhaohui Li, Editor(s)

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