Phase-shifted fiber Bragg gratings fabrication method

Novikova, V. A.; Varzhel, S. V.; Konnov, K. A.; Gribaev, A. I.; Mikhneva, A. A.; Frolov, E.

doi:10.1088/1742-6596/1038/1/012095

Cited by 2 publications

(1 citation statement)

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“…A point-based sensor has the ability of multiplexing, which can be used in distributed sensing of external perturbations. Depending on the gratings formed, fiber Bragg gratings can be uniform FBG, 3 chirped FBG, 23,24 tilted FBG, 25,26 long grating fiber, [27][28][29] phase-shifted FBG, 30,31 or super-structured FBG. 19 These gratings are usually inscribed in silica-based fiber but many research studies have been carried out on inscribing FBG in microstructured optical fiber (MOF) forming a microstructure FBG 32,33 or polymer-based FBG 34 that can offer unique Sahota, Gupta and Dhawan: Fiber Bragg grating sensors for monitoring of physical parameters.…”

Section: Optical Engineeringmentioning

confidence: 99%

Fiber Bragg grating sensors for monitoring of physical parameters: a comprehensive review

2020

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Fiber Bragg grating has embraced the area of fiber optics since the early days of its discovery, and most fiber optic sensor systems today make use of fiber Bragg grating technology. Researchers have gained enormous attention in the field of fiber Bragg grating (FBG)-based sensing due to its inherent advantages, such as small size, fast response, distributed sensing, and immunity to the electromagnetic field. Fiber Bragg grating technology is popularly used in measurements of various physical parameters, such as pressure, temperature, and strain for civil engineering, industrial engineering, military, maritime, and aerospace applications. Nowadays, strong emphasis is given to structure health monitoring of various engineering and civil structures, which can be easily achieved with FBG-based sensors. Depending on the type of grating, FBG can be uniform, long, chirped, tilted or phase shifted having periodic perturbation of refractive index inside core of the optical fiber. Basic fundamentals of FBG and recent progress of fiber Bragg grating-based sensors used in various applications for temperature, pressure, liquid level, strain, and refractive index sensing have been reviewed. A major problem of temperature cross sensitivity that occurs in FBG-based sensing requires temperature compensation technique that has also been discussed in this paper.

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