Humidity sensor based on twin-hole fiber filled with black phosphorus

Min Shao; Liang Han; Haonan Sun; Yinggang Liu; Haiwei Fu

doi:10.1117/12.2548844

20 December 2019 Humidity sensor based on twin-hole fiber filled with black phosphorus

Min Shao, Liang Han, Haonan Sun, Yinggang Liu, Haiwei Fu

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112093H (2019) https://doi.org/10.1117/12.2548844
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

An in-line fiber Mach-Zehnder interferometer (MZI) based on twin-hole fiber for humidity sensing was proposed and experimentally demonstrated. The twin-hole fiber was filled in black phosphorus (BP) by capillary absorption method, and then was sandwiched in between two single mode fibers (SMFs) to form intermodal interference. Utilizing the sensitivity of BP to ambient humidity, the MI could realize humidity measurement. Experiment results reveal that the interference intensity changes in the RH range of 20-80%RH, and the sensitivity was -0.028 dB/%RH. This sensor has great potential for application in chemical and biology fields.

Citation Download Citation

Min Shao, Liang Han, Haonan Sun, Yinggang Liu, and Haiwei Fu "Humidity sensor based on twin-hole fiber filled with black phosphorus", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112093H (20 December 2019); https://doi.org/10.1117/12.2548844

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