Selection of reports presented at the 8th All-Russian conference on fibre optics (5-8 October 2021, Perm) (compiled and edited by S.L.Semjonov)

Multicore optical fibre embedded Fabry–Perot sensing element of a bend sensor

O. N. Egorova^a, S. G. Zhuravlev^b, V. I. Pustovoi^a, S. L. Semenov<sup>b

a</sup> Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^b Prokhorov General Physics Institute of the Russian Academy of Sciences, Fiber Optics Research Center of the Russian Academy of Sciences, Moscow

Abstract: We propose a new type of a sensing element of a sensor for measuring the bending direction and magnitude, based on fibre Fabry–Perot interferometers embedded in the cores of multicore optical fibre. The measured sensitivity to the bend radius is 81 pm/m^-1. It is found that this sensitivity can be increased by varying the diameters of the optical fibres forming the sensing element.

Keywords: Fabry–Perot interferometer, bend sensor, multicore optical fibre.

Received: 26.10.2021

 English version: Quantum Electronics, 2021, 51:12, 1096–1100

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