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Correlation between optical fibre diameter and characteristics of tilted fibre Bragg grating-assisted sensors

Quantum Electronics. 2021. Vol. 51. No. 12. P. 1113–1117.
Tomyshev K. A., Dolzhenko E. I., O. V. Butov

We report the results of studying the influence of fibre diameter on the accuracy and resolution of fibre refractive index sensors based on tilted Bragg gratings – a key element used to develop high-precision fibre sensors for environmental monitoring. A comparative study is performed using one of universal processing algorithms based on spectral envelope analysis. It is shown that the sensor accuracy drops with a decrease in the fibre cladding diameter. At the same time, an increase in the diameter deteriorates the spectral pattern contrast, which is a hindrance for developing highefficiency sensor elements.

Research target: Physics
Language: English
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DOI
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Keywords: Fiber Bragg gratingoptical fiber sensorsВолоконные сенсорыВолоконная брэгговская решетка
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