Enhanced optical sensitivity of molybdenum diselenide (MoSe2) coated side polished fiber for humidity sensing

Tenghui Ouyang; Limin Lin; Kai Xia; Mengjiang Jiang; Yuwei Lang; Heyuan Guan; Jianhui Yu; Dongquan Li; Guanglei Chen; Wenguo Zhu; Yongchun Zhong; Jieyuan Tang; Jiangli Dong; Huihui Lu; Yunhan Luo; Jun Zhang; Zhe Chen

doi:10.1364/OE.25.009823

Enhanced optical sensitivity of molybdenum diselenide (MoSe₂) coated side polished fiber for humidity sensing

Opt Express. 2017 May 1;25(9):9823-9833. doi: 10.1364/OE.25.009823.

Authors

Tenghui Ouyang, Limin Lin, Kai Xia, Mengjiang Jiang, Yuwei Lang, Heyuan Guan, Jianhui Yu, Dongquan Li, Guanglei Chen, Wenguo Zhu, Yongchun Zhong, Jieyuan Tang, Jiangli Dong, Huihui Lu, Yunhan Luo, Jun Zhang, Zhe Chen

PMID: 28468362
DOI: 10.1364/OE.25.009823

Abstract

In this paper, a side-polished fiber (SPF) coated with molybdenum diselenide (MoSe₂) is proposed, and its characteristic of relative humidity (RH) sensing is investigated. It is found in the experiment that an enhancement in RH sensitivity (0.321 dB/%RH) can be achieved in a very wide RH range of 32%RH to 73%RH for the proposed MoSe₂ coated SPF (MoSe₂CSPF). It is also shown that the MoSe₂CSPF has a rapid response of 1s and recovery time of 4s, which makes the sensor capable of monitoring human breath. The experimental results suggest MoSe₂ has a promising potential in photonics applications such as all-fiber optic humidity sensing networks.