Multiparameter point sensing with the FBG-containing multicore optical fiber

Alexey Wolf; Kirill Bronnikov; Alexandr Dostovalov; Victor Simonov; Vadim Terentyev; Sergey Babin

doi:10.1117/12.2555325

1 April 2020 Multiparameter point sensing with the FBG-containing multicore optical fiber

Alexey Wolf, Kirill Bronnikov, Alexandr Dostovalov, Victor Simonov, Vadim Terentyev, Sergey Babin

Proceedings Volume 11354, Optical Sensing and Detection VI; 113540F (2020) https://doi.org/10.1117/12.2555325
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

We investigate possibilities of using a multicore fiber containing fiber Bragg grating (FBG) in sensing applications. We use the advantages of the femtosecond point-by-point technique to inscribe FBGs in the selected cores of polyimidecoated 7-core fiber. Besides the results on 3D shape sensing we present new approaches for acoustic wave detection and environment refractive index sensing. In particular, we show that spatial division multiplexing with a multicore fiber allows one to create multipoint acoustic sensor based on a single laser source. In addition, to detect the change in environment refractive index by using point-by-point FBG, there is no need in fiber coating removal. Thus, durability of the fiber along with the FBG inscription approach is of great potential for fabrication of next generation multiple parameter sensors.

Citation Download Citation

Alexey Wolf, Kirill Bronnikov, Alexandr Dostovalov, Victor Simonov, Vadim Terentyev, and Sergey Babin "Multiparameter point sensing with the FBG-containing multicore optical fiber", Proc. SPIE 11354, Optical Sensing and Detection VI, 113540F (1 April 2020); https://doi.org/10.1117/12.2555325

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KEYWORDS

Fiber Bragg gratings

Sensors

Acoustics

Interferometers

Coating

Optical fibers

Refractive index

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