Tungsten disulfide (WS2) based all-fiber-optic humidity sensor.

  title={Tungsten disulfide (WS2) based all-fiber-optic humidity sensor.},
  author={Yunhan Luo and Chaoying Chen and Kai Xia and Shuihua Peng and Heyuan Guan and Jieyuan Tang and Huiui Lu and Jianhui Yu and Jun Zhang and Yi Xiao and Z. H. Chen},
  journal={Optics express},
  volume={24 8},
We demonstrate a novel all-fiber-optic humidity sensor comprised of a WS2 film overlay on a side polished fiber (SPF). This sensor can achieve optical power variation of up to 6 dB in a relative humidity (RH) range of 35%-85%. In particular, this novel humidity fiber sensor has a linear correlation coefficient of 99.39%, sensitivity of 0.1213 dB/%RH, and a humidity resolution of 0.475%RH. Furthermore, this sensor shows good repeatability and reversibility, and fast response to breath stimulus… CONTINUE READING