High-temperature sensing method based on optical fiber micro Michelson interference on spherical end face
A spherical end, optical fiber technology, applied in the field of high temperature sensing based on spherical end face optical fiber micro-Maxson interference, can solve the problems of high cost and high demodulation cost, and achieve the effect of compact structure, large measurement range and no electromagnetic interference.
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[0018] Such as figure 1 and figure 2 As shown, the device used in the present invention includes a broadband light source 1, an optical coupler 2, a spectrum analyzer 3, and an optical fiber high temperature sensing head 4 with a spherical end face.
[0019] The output port of broadband light source 1 is connected with the first port optical fiber of optical coupler 2; The input port of spectrum analyzer 3 is connected with the second port optical fiber of optical coupler 2; The third port of optical coupler 2 is connected with a The optical fiber high-temperature sensing head 4 with a spherical end face is connected to an optical fiber; the components that form the optical fiber high-temperature sensing head 4 with a spherical end face include a section of single-mode optical fiber 5 and a section of hollow-core photonic crystal fiber 6, and the manufacturing steps are as follows: the single-mode optical fiber 5 The output port and the input port of the hollow-core photonic...
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