Signal of the evanescent wave sensor as a function of its length and the refractive index of the surrounding medium

Jan Rayss; Grzegorz Sudolski

doi:10.1117/12.409176

13 December 2000 Signal of the evanescent wave sensor as a function of its length and the refractive index of the surrounding medium

Jan Rayss, Grzegorz Sudolski

Author Affiliations +

Proceedings Volume 4239, Lightguides and their Applications; (2000) https://doi.org/10.1117/12.409176
Event: Lightguides and their Applications, 1999, Krasnobrod, Poland

Abstract

The paper describes an evanescent wave sensor model operating far from the modal steady state. Assuming that of the numerical aperture varies exponentially with the fibre length and the light losses are proportional to the local and fibre numerical apertures ratio, the sensor description was evaluated. Experiments, in which the sensor absorbance versus the refractive index of the medium surrounding the fibre core and the fibre sensing section length, were made to confirm the theoretical model of the sensor and good agreement was observed.

Citation Download Citation

Jan Rayss and Grzegorz Sudolski "Signal of the evanescent wave sensor as a function of its length and the refractive index of the surrounding medium", Proc. SPIE 4239, Lightguides and their Applications, (13 December 2000); https://doi.org/10.1117/12.409176

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