Optical module coupling method

Abstract

The invention relates to the technical field of optical module coupling, and provides an optical module coupling method which comprises the following steps of S1, adopting a small-aperture optical fiber to receive the focused laser, and in an initial state, enabling at least part of a converged light spot after laser focusing to fall outside the small-aperture optical fiber; S2, monitoring the coupling power, and adjusting the angle of the laser incident to the small-aperture optical fiber according to the monitored coupling power; and S3, along with the adjustment of the laser incident angle, enabling the coupling power to gradually tend to be normal, and when the numerical value of the to-be-monitored coupling power is normal, replacing the small-aperture optical fiber by a normal-aperture optical fiber. According to the optical module coupling method, the angle of the incident light is adjusted by adopting the small-aperture optical fiber in cooperation with monitoring the coupling power, it can be ensured that the incident angle of the convergence light spot is exactly opposite to the center of the optical fiber, and therefore the situation that the high-order mode is lost during transmission is avoided.

Description

technical field [0001] The invention relates to the technical field of optical module coupling, in particular to an optical module coupling method. Background technique [0002] With the continuous popularization of the Internet, optical fiber communication technology has played an important role in the communication network due to its transmission frequency bandwidth, long transmission distance, large communication capacity, high quality, low loss, and strong anti-interference ability. Research hotspots in related fields at home and abroad. As an important component of the optical fiber communication transmission process, the optical module is developing rapidly in the direction of miniaturization, low cost, low loss, high speed, and long distance. [0003] The optical module is mainly used in the data center for photoelectric conversion and data transmission. When the optical module performs data transmission, it needs to convert the corresponding electrical signal into a...

AI Technical Summary

Problems solved by technology

[0004] When the optical module performs lens coupling, the general method is to connect a normal optical fiber on the side of the lens as the optical transmission coupling channel, and after the light emitted by the measured laser is focused by the lens, the spot diameter is smaller than the normal optical fiber transmission aperture, so when optical fiber coupling , there is a certain probability that the light spot will eventually be coupled to the edge of the fiber transmission aperture. When the light spot is coupled to the edge of the fiber transmission hole, the fiber can still transmit power, but a part of the light will be transmitted at the edge of the fiber cladding during the transmission process. Part of the light is high-order mode light, which is easy to lose this high-order mode during subsequent transmission. This is the shortcoming of conventional optical module coupling

Images