Coating based fiber Bragg grating humidity sensor array

Lun-Kai Cheng; Arjen Boersma; Rob Jansen

doi:10.1117/12.973826

7 November 2012 Coating based fiber Bragg grating humidity sensor array

Lun-Kai Cheng, Arjen Boersma, Rob Jansen

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842168 (2012) https://doi.org/10.1117/12.973826
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

A coating based FBG humidity sensor is developed for distributed humidity sensing. The sensitivity of the coated FBG is optimized by varying the chemical composition and the thickness of the coating. A sensitivity of ~2 pm/%RH and a rapid response are demonstrated. The composition of the coating can be adapted for sensing other chemical elements. For the design and modeling of the responsive polymer coatings, a toolbox is developed. Using this toolbox, sensors for sour gas like CO₂ and H₂S for the Oil&Gas industry are developed. The results match well with the prediction.

Citation Download Citation

Lun-Kai Cheng, Arjen Boersma, and Rob Jansen "Coating based fiber Bragg grating humidity sensor array", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842168 (7 November 2012); https://doi.org/10.1117/12.973826

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