A polarization maintaining optical fiber assembly device and using method thereof

Abstract

The invention provides a polarization-maintaining optical fiber assembly device and its use method. The transverse clamping mechanism has a clamping part, and the clamping part is used to laterally clamp the ferrule base, so that the ferrule base and the polarization-maintaining optical fiber are vertically aligned. Relatively; the turnover fixture includes a fixture base, a fiber holder, a gland and a lifting mechanism; the fiber holder is fixed on the fixture base for clamping the polarization-maintaining optical fiber, and the gland moves up and down and is installed on the fixture base. The cover and the fixture base clamp the ferrule base up and down, and the lifting mechanism drives the cover to move up and down; adjust the position of the observation equipment through the adjustment frame so that the observation equipment is opposite to the end face of the ferrule. The beneficial effects of the technical solution proposed by the present invention are: the stress regions at the ends of different types of polarization-maintaining optical fibers are precisely aligned, which is convenient for later docking or fusion splicing, and can improve the assembly efficiency of polarization-maintaining optical fibers. The assembly process is simple and easy to control and reduces the The time cost of optical fiber assembly is simple, the device structure is simple, the cost is low and easy to realize, and the operability is good to facilitate mass production.

Description

technical field [0001] The invention relates to the technical field of optical fiber manufacturing, in particular to a polarization-maintaining optical fiber assembly device and a method for using the same. Background technique [0002] Polarization-maintaining optical fiber is an important basic equipment for coherent optical communication and coherent optical fiber sensing system. By artificially creating birefringence in the fiber, the propagation constants of the two linear polarization fundamental modes in the polarization-maintaining fiber are greatly different to effectively suppress the random and unstable inter-mode coupling during propagation, thereby achieving polarization-maintaining performance and high Transmission requirements for precision signals. Theoretically, the sensitivity of the coherent detection method can be increased by nearly 20dB compared with the direct amplitude detection, so the coherent optical fiber sensor based on the polarization maintain...

AI Technical Summary

Problems solved by technology

For this type of polarization-maintaining fiber, the imaging characteristics are not obvious, and it is difficult to detect the polarization axis directly through side-illuminated imaging observation, and the alignment process sometimes requires the use of matching fluid, which also limits the work efficiency and application range

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