Review of femtosecond-laser-inscribed fiber Bragg gratings: fabrication technologies and sensing applications

J He, B Xu, X Xu, C Liao, Y Wang - Photonic Sensors, 2021 - Springer
Fiber Bragg grating (FBG) is the most widely used optical fiber sensor due to its compact
size, high sensitivity, and easiness for multiplexing. Conventional FBGs fabricated by using …

Optical fiber sensors for high-temperature monitoring: a review

S Ma, Y Xu, Y Pang, X Zhao, Y Li, Z Qin, Z Liu, P Lu… - Sensors, 2022 - mdpi.com
High-temperature measurements above 1000° C are critical in harsh environments such as
aerospace, metallurgy, fossil fuel, and power production. Fiber-optic high-temperature …

Review of femtosecond laser direct writing fiber-optic structures based on refractive index modification and their applications

J Zhao, Y Zhao, Y Peng, R Lv, Q Zhao - Optics & Laser Technology, 2022 - Elsevier
Femtosecond (fs) laser pulses direct writing technology has been extensively employed to
achieve microfabrication in various optical fibers for a broad range of applications. In this …

Femtosecond laser point-by-point inscription of an ultra-weak fiber Bragg grating array for distributed high-temperature sensing

B Xu, J He, B Du, X Xiao, X Xu, C Fu, J He, C Liao… - Optics …, 2021 - opg.optica.org
Ultra-weak fiber Bragg grating (UWFBG) arrays are key elements for constructing large-
scale quasi-distributed sensing networks for structural health monitoring. Conventional …

Progress toward sapphire optical fiber sensors for high-temperature applications

C Zhu, RE Gerald, J Huang - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
High-temperature measurements are of significant importance in various harsh-environment
engineering fields, such as fossil fuel production, and the metallurgical and aviation …

Fiber-optic microstructure sensors: A review

Z Ran, X He, Y Rao, D Sun, X Qin, D Zeng, W Chu… - Photonic Sensors, 2021 - Springer
This paper reviews a wide variety of fiber-optic microstructure (FOM) sensors, such as fiber
Bragg grating (FBG) sensors, long-period fiber grating (LPFG) sensors, Fabry-Perot …

A high temperature sensor based on sapphire fiber Fabry-Perot interferometer

B Wang, Y Niu, S Zheng, Y Yin… - IEEE Photonics …, 2019 - ieeexplore.ieee.org
A sapphire fiber high temperature sensor based on Fabry-Perot interference was studied in
the paper. A sapphire wafer served as the Fabry-Perot cavity was fixed to the end face of the …

Ultra-short phase-shifted fiber Bragg grating in a microprobe for refractive index sensor with temperature compensation

M Chen, T He, Y Zhao, G Yang - Optics & Laser Technology, 2023 - Elsevier
Ultra-short phase-shifted fiber Bragg grating (PS-FBG) composed of cascaded
microchannels is proposed and demonstrated experimentally. The cascaded microchannels …

Large-scale cascading of first-order FBG array in a highly multimode coreless fiber using femtosecond laser for distributed thermal sensing

F Mumtaz, B Zhang, RJ O'Malley, J Huang - Optics Express, 2023 - opg.optica.org
This research focuses on the performance analysis and characterization of a fiber Bragg
gratings (FBGs) array, consisting of 10 first-order FBGs inscribed by a femtosecond (FS) …

Highly cascaded first-order sapphire optical fiber Bragg gratings fabricated by a femtosecond laser

F Mumtaz, H Tekle, B Zhang, JD Smith, RJ O'Malley… - Optics Letters, 2023 - opg.optica.org
This Letter reports an innovative technique for fabricating large-scale, highly cascaded first-
order sapphire optical fiber Bragg gratings (FBGs) using a femtosecond laser-assisted point …