Optical fiber collimator of optical fiber laser

Abstract

The invention discloses an optical fiber collimator of an optical fiber laser. The optical fiber collimator of the optical fiber laser is mainly used for adjusting optical fibers by optical fibers. In a shell, a semiconductor laser diode which is used for emitting a visible light beam and a focusing lens are arranged in a manner of sharing a same central optical axis; the focusing lens can be used for focusing and coupling the visible light beam into a collimation optical fiber; an output coupling head of a movable connecting rod couples the visible light beam into a laser working optical fiber; after the relative positions of the laser working optical fiber and the collimation optical fiber are watched from the output end of the laser working optical fiber and the collimation positions of the laser working optical fiber and the collimation optical fiber are adjusted, the collimation optical fiber is removed and a pump light output optical fiber of a pump source is connected. Compared with the prior art, the optical fiber collimator of the optical fiber laser is simple in structure, small in volume, convenient to mount and adjust, high in adjustment precision, time-saving, labor-saving, suitable for end face adjustment of various optical fibers and strong in practicability.

Description

technical field [0001] The invention relates to a fiber collimator of a fiber laser, in particular to a collimation used for the end face coupling of an optical fiber to an optical fiber. Background technique [0002] In the fiber laser, it is necessary to couple the pump light from the output end face of the fiber to the end face of the working fiber of the fiber laser through optical fiber transmission. If the pump light source is an infrared fiber laser, the output pump light is invisible light, which is very difficult to adjust. It is difficult to accurately focus the pump light to the center of another laser working fiber, which will cause the loss of pump light and reduce the pump efficiency. If the pump light is focused on the edge of another working fiber, it may also pollute the end face of the fiber because the outer cladding of the fiber is burned by the pump light, which brings inconvenience to the actual operation. [0003] In the prior art, the collimation of ...

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Problems solved by technology

However, the slider requires high machining accuracy, high cost, large volume, and difficult adjustment. The longer the distance of the slider, the more difficult it is to guarantee the accuracy.

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