The influence of no-core fibre length on the sensitivity Optical fibre Humidity sensor

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Suroor Lazem Kashen
Hanan J. Taher

Abstract

Abstract: Reflection optical fibre Humidity sensor is presented in this work, which is based on no core fibre prepared by splicing a segment of no core fibre (NCF) at different lengths 1-6 cm with fixed diameter 125 µm and a single mode fibre (SMF). The range of humidity inside the chamber is controlled from 30% to 90% RH at temperature ~ 30 °С. The experimental result shows that the resonant wavelength dip shift decreases linearly with an increment of RH% and the sensitivity of the sensor increased linearly with an increasing in the length of NCF. However, a high sensitivity 716.07pm/RH% is obtained at length 5cm with good stability and reputability.  Furthermore, the sensor is shifted towered a short wavelength (Blue shift).


 

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How to Cite
[1]
S. L. Kashen and H. J. Taher, “The influence of no-core fibre length on the sensitivity Optical fibre Humidity sensor ”, IJL, vol. 20, no. 2, pp. 18–23, Dec. 2021, doi: 10.31900/ijl.v20i2.282.
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How to Cite

[1]
S. L. Kashen and H. J. Taher, “The influence of no-core fibre length on the sensitivity Optical fibre Humidity sensor ”, IJL, vol. 20, no. 2, pp. 18–23, Dec. 2021, doi: 10.31900/ijl.v20i2.282.

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