Dear Colleagues,

Although fiber Bragg grating (FBG) sensors have seen tremendous developments and applications within the last three decades, they still cannot fully cater to the rapidly growing measurement demands in the industrial sector. The objective of this Special Issue is to present state-of-the-art developments and advances in FBG sensing technologies and their applications. This is seen especially in the aspects of highly accurate measurement and multipoint and multiparameter simultaneous perception (including acceleration, force, temperature, pressure, etc.) based on FBG. The reliability and sensing performances of mainstream FBG-based sensors packaged with glue are seriously limited by this encapsulation processing. Moreover, most of them are only utilized to sense a single parameter instead of multiparameter sensing. Consequently, some notable technologies such as novel encapsulation techniques of FBG and advanced high-performance FBG-based sensors could be investigated in depth and developed to construct a robust and more reliable sensing node of a distributed FBG-based monitoring system. Meanwhile, current FBG demodulation accuracy and speed are not adequate for their applications in high-precision and dynamic measurement. The FBG sensing array method has been increasingly employed in complex mechanical structure structures to fully monitor and evaluate their health states.

Potential topics include but are not limited to:

• Novel FBG-based physical, biological, and chemical sensors;
• Advanced encapsulation techniques of FBG;
• FBG sensors based on special optical fibers;
• High-speed and precision interrogation technologies of FBG sensing;
• Special measurements and applications of FBG in the fields of oil, transport, civil structure, aerospace equipment, robotics, etc.

Prof. Dr. Tianliang Li
Guest Editor

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• optical fiber sensing
• Fiber Bragg grating
• regenerated fiber bragg grating
• multicore fiber bragg grating
• photonic crystal fiber
• multiparameter sensing including for acceleration and force
• FBG interrogation technologies
• huge-capacity distributed sensing
• structural health monitoring