Repeatability and Reversibility of the Humidity Sensor Based on Photonic Crystal Fiber Interferometer

The RH sensor operation based on water vapor adsorption and desorption at the silica-air interface within the PCF. Sensor fabrication is simple; it includes splicing and cleaving the PCF with SMF only. PCF (LMA-10) with a certain length spliced to SMF (Corning-28). The PCFI spectrum exhibits good se...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-05, Vol.1003 (1), p.12072
Main Authors: Hindal, S S, Taher, H J
Format: Article
Language:English
Subjects:
Crystal fibers
Electromagnetic interference
Humidity
Humidity sensors
Interferometers
Optical fiber sensor
Photonic crystal fiber
Photonic crystals
Physics
Relative humidity
Repeatability
Reproducibility
Sensitivity
Sensors
Silicon dioxide
Splicing
Water vapor
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Summary:The RH sensor operation based on water vapor adsorption and desorption at the silica-air interface within the PCF. Sensor fabrication is simple; it includes splicing and cleaving the PCF with SMF only. PCF (LMA-10) with a certain length spliced to SMF (Corning-28). The PCFI spectrum exhibits good sensitivity to the variations of humidity. The PCFI response is observed for range of relative humidity values from (27% RH to 85% RH), the interference peaks position is found to be shifted to longer wavelength as the humidity increases. In this work, a 6cm length of PCFs is used, and it shows a sensitivity of (2.41pm / %RH), good repeatability, and reversible in nature. This humidity sensor has distinguished features as that the sensor does not require the use of a hygroscopic material, robust, compact size, immunity to electromagnetic interference, and it has potential applications for high humidity environments.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1003/1/012072