Method for adjusting coaxiality of optical machines of transmission-type optical fiber collimator

Abstract

The invention relates to a method for adjusting coaxiality of optical machines of a transmission-type optical fiber collimator. The method comprises the steps that the position of the optical fiber collimator (3) is adjusted vertically and laterally in sequence while the optical power received by an instrument (9.2) is observed; and when the optical power in the vertical direction and the optical power in the lateral direction are the largest simultaneously, the center of a laser beam coincides with the center of a pinhole, the direction of the laser beam is parallel to a mechanical axis serving as the reference, and accordingly, the coaxiality of the optical machines is achieved. By means of the method for adjusting the coaxiality of the optical machines of the transmission-type optical fiber collimator, an adjusting device is simple in structure, adjusting steps are few, and the process is simple. Furthermore, the mechanical axis of the optical fiber collimator serves as the reference, the emission direction of the laser beam is changed by vertically and laterally adjusting the position of the optical fiber collimator until the emission direction of the laser beam coincides with the direction of the mechanical axis serving as the reference, and accordingly, the optical fiber collimator has high-accuracy optical machine coaxiality.

Description

technical field [0001] The invention relates to a transmission method for adjusting the optical-mechanical coaxiality of an optical fiber collimator. Background technique [0002] In fiber optic devices, the fiber collimator is a key device. Traditional fiber collimators such as figure 1 As shown, it is mainly composed of optical fiber and its fixing structure, lens, and peripheral fixing parts. Due to the gap between the peripheral metal sleeve and glass tube, and the difference in material refractive index and behavior error between the fiber core and lens etc., the laser beam emitted from the lens is not parallel to the mechanical axis of the metal tube. Therefore, when fiber collimators are used in other optical devices, two matching fiber collimators often require a professional and complex alignment process, which not only restricts the manufacturing efficiency of related optical devices, but also affects the quality of optical devices. One of the reasons for the hi...

AI Technical Summary

Problems solved by technology

Therefore, when fiber collimators are used in other optical devices, two matching fiber collimators often require a professional and complex alignment process, which not only restricts the manufacturing efficiency of related optical devices, but also affects the quality of optical devices. One of the reasons for the high cost

However, in some occasions, for example, in fiber optic rotary connectors, matching adjustments cannot be performed between two fiber collimators, which restricts the use of fiber collimators

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