Polarization-maintaining fiber coupler, preparation method thereof and all-fiber optical current sensor
A technology of current sensor and polarization-maintaining fiber, which is applied in the direction of coupling of optical waveguides, and can solve the problems of unreliable main performance and so on.
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[0020] The polarization-maintaining fiber coupler of the present invention is developed based on the technology and characteristics of a common single-mode fiber coupler, and the transmission characteristics of linearly polarized light in an ideal single-mode fiber without bending and perturbation. The main features of the polarization-maintaining fiber coupler of the present invention are: all the coupling area is drawn by single-mode fiber; the input end of the polarization-maintaining fiber coupler contains at least one polarization-maintaining fiber, and the output end directly connected to it is single-mode Optical fiber, the input end of the polarization-maintaining fiber coupler includes at least one single-mode fiber, and the output end directly connected to it is a polarization-maintaining fiber, and the polarization-maintaining fibers at the input and output ends respectively correspond to the single-mode fibers in the coupling zone. The optical fiber is fusion spliced ...
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