A fast response and highly sensitivity relative humidity sensor with polymer-coated micro-nano fiber Bragg grating

Pengfei Li; Haitao Yan; Feilin Zhang; Hongzhan Cao; Zhanwu Xie

doi:10.1117/12.2504275

12 December 2018 A fast response and highly sensitivity relative humidity sensor with polymer-coated micro-nano fiber Bragg grating

Pengfei Li, Haitao Yan, Feilin Zhang, Hongzhan Cao, Zhanwu Xie

Author Affiliations +

Proceedings Volume 10849, Fiber Optic Sensing and Optical Communication; 108490K (2018) https://doi.org/10.1117/12.2504275
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China

Abstract

In this paper, we proposed a new approach to measured humidity by polymer-coated micro-nano Bragg grating. The FBG was written in a 21.85-μm –diameter micro-nano fiber by 244-nm UV laser. Humidity changed the force that acting on the micro-nano fiber, thus the bandwidth of the reflection spectra was introduced and humidity measurement was therefore realized. When the humidity increased, the linearity value was 99 % and the bandwidth changed 0.00312 nm/%. The linearity is 97% and 98% in the stages of humidity reduction in 90 to 65 %RH and 65 to 30 %RH, respectively.

Citation Download Citation

Pengfei Li, Haitao Yan, Feilin Zhang, Hongzhan Cao, and Zhanwu Xie "A fast response and highly sensitivity relative humidity sensor with polymer-coated micro-nano fiber Bragg grating", Proc. SPIE 10849, Fiber Optic Sensing and Optical Communication, 108490K (12 December 2018); https://doi.org/10.1117/12.2504275

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