Hybrid fiber interferometer sensor for simultaneous measurement of strain and temperature with refractive index insensitivity

Optical fiber sensors for water and air quality monitoring: a review

“…They offer numerous advantages, including high sensitivity, real-time, and remote transmission capabilities and find extensive applications in various fields, such as industry, aerospace, medical, and environmental monitoring. 64,65 The sensing fiber interacts with the physical quantity to be measured, and the reference fiber remains unaffected by the said physical quantity. When light passes through the sensing region of the optical fiber, the light waves in the sensing fiber combine with those in the reference fiber.…”

“…Optical fiber interferometric sensors are a cutting-edge sensing technology based on the principle of light interference. They offer numerous advantages, including high sensitivity, real-time, and remote transmission capabilities and find extensive applications in various fields, such as industry, aerospace, medical, and environmental monitoring 64 , 65 . The sensing fiber interacts with the physical quantity to be measured, and the reference fiber remains unaffected by the said physical quantity.…”

Introductory Chapter: Optical Interferometry in Interdisciplinary Applications

“…Small sample detection, specifically related to biosensing, is another major area based on optical sensing applications where OI has contributed significantly. Traces of chemicals as small as micro or picolitres could be sensed using a technique where microfluidic devices are used in combination with OI [18][19][20]. This technique has enabled real-time monitoring of reaction systems and product formations, useful for novel biochemical applications in the microscopic scale.…”

Simultaneous strain and temperature sensing with a compact dual fiber Bragg grating structure

“…Strain and temperature parameter measurements are important for tracking the health information in the fields of bridge engineering and aerospace [1] . Various configurations of fiber optic devices are reported to distinguish for the strain and temperature simultaneously, including fiber Bragg gratings (FBGs) [2,3] , various fiber interferometers [4][5][6] , long period fiber gratings (LPFGs) [7,8] , photonics crystal fiber sensors [9] , and other hybrid structures [10][11][12] . Among them, FBGs have attracted much attention from researchers because its small size, reflection mode operation and excellent wavelength division multiplexing capability [1] .…”