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In this work, a tilted fiber Bragg grating (TFBG) is integrated with a free spectral range matched interrogation (FSRMI) system for temperature and strain sensing applications. The experimental data show that the peak wavelengths of the core and cladding modes of the TFBG shift linearly to longer wavelength with the increase of temperature and strain. Since the FSRMI system allows simultaneous demodulation...
To enable the application of optical fiber sensors to aerospace vehicles, the sensor interrogation or data acquisition system has to meet small size and low weight requirements. This paper presents the developmental work of an echelle diffractive gratings (EDGs) demultiplexer-based optical fiber sensor interrogation system. The operation principle of this system and its application to fiber Bragg...
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