A high sensitivity humidity sensor based on an Agarose coated photonic crystal fiber interferometer

Jinesh Mathew; Yuliya Semenova; Gerald Farrell

doi:10.1117/12.975153

7 November 2012 A high sensitivity humidity sensor based on an Agarose coated photonic crystal fiber interferometer

Jinesh Mathew, Yuliya Semenova, Gerald Farrell

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842177 (2012) https://doi.org/10.1117/12.975153
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We report a novel high sensitivity relative humidity (RH) sensor based on Agarose coated photonic crystal fiber interferometer. We also demonstrate the experimental method to precisely apply a suitable coating thickness to achieve high RH sensitivity. The sensor shows a linear response for an RH change in the range of 40-70 %RH with a humidity resolution of 0.03 %RH and a higher humidity resolution of 0.01 %RH in the range 70-95 %RH. The sensor response is found to be reversible and repeatable with good long term stability.

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Jinesh Mathew, Yuliya Semenova, and Gerald Farrell "A high sensitivity humidity sensor based on an Agarose coated photonic crystal fiber interferometer", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842177 (7 November 2012); https://doi.org/10.1117/12.975153

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