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High resolution refractive index sensing with cladded multimode tapered optical fibre

High resolution refractive index sensing with cladded multimode tapered optical fibre

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Published

A new fibre-optic refractive index sensor is presented. It is based on the radiation losses introduced by the sample medium in a cladded multimode tapered fibre. A simple light transmission measurement setup is used to test some samples. It is demonstrated that the sensor is suitable for measuring RI in the range 1.36 to 1.46, as well as RI changes below 10−4.

Inspec keywords: optical fibre cladding; light transmission; refractive index measurement; fibre optic sensors; optical fibre losses

Other keywords: fibre-optic refractive index sensor; RI range; light transmission measurement setup; radiation losses; sample medium; High resolution refractive index sensing; cladded multimode tapered optical fibre; RI changes

Subjects: Fibre optic sensors; fibre gyros; Optical propagation, dispersion and attenuation in fibres; Optical variables measurement; Optical fibre fabrication, cladding, splicing, joining; Fibre optics; Optical refractometry and reflectometry; Fibre optic sensors

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