High birefringence fiber loop mirror with polymer coating used as humidity sensor

Houhui Liang; Yongxing Jin; Yu Zhao

doi:10.1117/12.905405

29 November 2011 High birefringence fiber loop mirror with polymer coating used as humidity sensor

Houhui Liang, Yongxing Jin, Yu Zhao

Proceedings Volume 8311, Optical Sensors and Biophotonics III; 83110T (2011) https://doi.org/10.1117/12.905405
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

A relative humidity sensor based on polarization maintaining fiber (PMF) loop mirror is presented. The proposed sensors are created through coating a thin layer of polyvinyl alcohol (PVA), whose refractive index varies as a function of humidity level, onto a polarization maintaining fiber, from which a portion of the cladding is removed. The relative humidity optical fiber sensor is tested with different surrounding humidity level, showing a linear response to parameter. The sensitivity of the relative humidity measurement of 0.98 nm/%RH in the range from 20%-80% RH is experimentally achieved.

Citation Download Citation

Houhui Liang, Yongxing Jin, and Yu Zhao "High birefringence fiber loop mirror with polymer coating used as humidity sensor", Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83110T (29 November 2011); https://doi.org/10.1117/12.905405

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