Progress in Fiber Bragg Gratings Sensor

Dear Colleagues,

Fiber Bragg gratings (FBGs) are used in sensor and telecommunication industries for their ability to reflect specific wavelengths of light, due to periodic changes in the refractive index (RI) of an optical fiber. FBGs have been a key technology in the field of fiber optic sensing (FOS) since their discovery, and are commonly used in fiber FOS systems nowadays. FBGs are popular for their inherent superiorities, including their small size, fast response, quasi-distributed sensing capabilities, anti-harsh environment, and immunity to EMI. They are widely used to measure physical parameters such as strain, pressure, temperature, RI, acoustic, shape, humidity, gas, etc., and in various fields, including civil engineering, industrial engineering, military, maritime, and aerospace. In recent years, there has been a strong focus on using FBG-based sensors for structural health monitoring (SHM) of various engineering and civil structures.

FBGs can be of different types, including uniform fiber Bragg grating (UFBG), long-period fiber Bragg grating (LFBG), chirped fiber Bragg grating (CFBG), tilted fiber Bragg grating (TFBG), ultra-weak fiber Bragg grating (uwFBG), or phase-shifted fiber Bragg grating (PS-FBG), and have drawn researchers’ attention in previous decades.

This research topic aims to present the most recent research progress in manufacturing methods, model modeling, special design, theoretical analysis, experimental investigations, demodulation methods and applications, device development, sensing performance optimization, and demodulation methods for innovative FBG sensors. Potential topics include, but are not limited to, the following:

• Manufacturing methods for FBGs;
• Special design for FBGs;
• Physical sensors, biosensors and chemical sensors based on FBGs;
• Special or multi-functional FBG sensors;
• FBG sensors and devices;
• Demodulating methods and algorithms based on FBG sensors;
• Multiplexing methods for FBG sensors;
• Signal processing for FBG sensors;
• Multi-DOF sensing based on FBGs;
• Structural health monitoring and other applications of FBG sensors.

Dr. Shun Wang
Dr. Wenjun Ni
Dr. Liang Zhang
Guest Editors

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