Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 37, Issue 2, Pages 440-444Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.381089
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Funding
- National Natural Science Foundation of China [61405008, 61875008]
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We present an all-fiber sensor for strain and temperature discrimination by inserting three sections of high birefringence fibers into a Sagnac loop. The principle for strain and temperature discrimination is based on monitoring the wavelength shifts of two different resonant dips that show different sensitivities to temperature and strain. The sensitivities for strain and temperature are measured to be -0.93 nm/degrees C and 21 pm/mu epsilon with discriminative errors of +/- 0.3 degrees C and 12 mu epsilon. The proposed sensor with high sensitivity, simple configuration, and low cost may be a promising candidate for various strain and temperature-sensing applications. (C) 2020 Optical Society of America
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