Device for automatically controlling and adjusting polarization state of optical fiber

Abstract

The invention discloses a device for automatically controlling and adjusting the polarization state of an optical fiber and relates to the technical field of optical fiber communications. The device for automatically controlling and adjusting the polarization state of an optical fiber comprises a fixed bottom plate. A reducer fixed base is fixedly connected to the upper surface of the fixed bottomplate; a fixed board is fixedly connected to the upper surface of the reducer fixed base; a reducer is fixedly connected to the upper surface of the reducer fixed base; a transmission rod is arrangedinside the reducer; one end of the transmission rod penetrates through the inner side wall of the reducer and stretches to the exterior of the reducer; a motor is fixedly connected to one side surface of the reducer far away from the fixed board; and the output end of the motor penetrates through the outer surface of the reducer, stretches to the interior of the reducer and is fixedly connected with the transmission rod of the reducer. The device for automatically controlling and adjusting the polarization state of an optical fiber has the advantages of being able to accurately and repeatedlyadjust the same polarization state, greatly improving the adjustment efficiency of the polarization state of the optical fiber, and being able to fix an optical fiber ring in a fixed position, thereby maintaining the polarization state of the optical fiber unchanged.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a device for automatically controlling and adjusting the polarization state of an optical fiber. Background technique [0002] With the development of optical fiber communication and sensing technology, the polarization characteristics of optical fiber have attracted more and more attention. How to eliminate the influence of polarization has become the focus of research. At present, the following principles and methods generally exist in the research of optical fiber polarization controllers For example, wave plate type, electro-optic crystal type, and fiber extrusion type polarization controllers, because the first two types of polarization controllers have high insertion loss and are greatly affected by the environment, so fiber extrusion type polarization controllers are generally used in the development of lasers at present. Controller, which puts high req...

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Problems solved by technology

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art, and to provide an automatic control device for adjusting the polarization state of an optical fiber, which can realize accurate and repeatable adjustment of the same polarization state, greatly improve the efficiency of optical fiber polarization adjustment, and enable the fiber ring The plate is fixed at a certain position, so as to keep the polarization state of the fiber unchanged, and solve the problems of the error in the rotation angle of the fiber ring plate and the poor stability of the fiber polarization state.

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