Optical fiber temperature sensor
A temperature sensor and optical fiber technology, applied in thermometers, thermometers with physical/chemical changes, instruments, etc., can solve the problems of insulated stress, etc., and achieve the effects of simple structure, increased service life, and improved sensitivity
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[0016] See Figure 1-Figure 3 , The embodiment of the present invention provides a fiber optic temperature sensor, including a broadband light source 7, a first single-mode fiber 1, a second single-mode fiber 5, a multi-core fiber 3, and optical analysis equipment (spectrometer 8 is used in this embodiment) . The broadband light source 7 is connected to the optical analysis equipment (spectrometer 8 is used in this embodiment) through the first single-mode fiber 1, the multi-core fiber 3, and the second single-mode fiber 5 in sequence. The joints of the first single-mode fiber 1, the second single-mode fiber 5 and the multi-core fiber 3 are all collapsed structures with approximately uniform distribution of the refractive index profile of the fiber formed by arc discharge. The collapsed structure here refers to the destruction of the step fiber The structure with well-defined refractive index distribution of the core and cladding makes the refractive index in this area approxi...
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