Multiple output optical fiber head for optical fiber coupling

Abstract

The invention is an optical-fiber coupling multiple output optical fiber head, including: a front inner connector having big- and small- diameter ends, where there is a screw thread on the big-diameter end and there is a screw thread on the root of the small-diameter end, there is a through hole in the middle of the small-diameter end, and the through hole fixes the optical fiber core; a front fixing head, having thick and thin ends, there is a through hole in the middle of the front fixing head, there is a inner screw thread on the thick end of the through hole, the front inner connector is inserted in the through hole of the front fixing head, and the screw thread on the small-diameter end is linked with the inner screw thread of the front fixing head; a back inner connector, having big- and small- ends, there is a screw thread on the big-diameter, there is a through hole in the middle of the big-diameter end, and the through hole fixes the part with coating of the optical fiber; a back fixing head, one end has screw thread, and the middle through hole is step-shaped, and there is an inner screw thread on the through hole; the back inner connector is inserted in the back fixing head and linked with the back fixing head by the screw thread; a linking part; the big-diameter end of the front inner connector is linked with the linking part by the screw thread; the screw thread end of the back fixing head is linked with the linking part through the screw thread.

Description

technical field [0001] The invention provides an optical fiber output fiber head, in particular to a bundle device for a plurality of output fiber heads for optical fiber coupling. Background technique [0002] In medical treatment, pumping, material processing and processing, etc., a large laser fiber-coupled output power is required, and an effective way to increase the laser fiber-coupled output power is to use a fiber bundle array to realize a high-power semiconductor laser line array. Fiber-coupled output. In addition, due to the sharp increase of broadband and high-speed communication services, it is necessary to arrange multiple optical fibers into an array of optical fiber bundles as input and output interfaces. Therefore, multiple output optical fiber heads are more and more widely used. [0003] At present, the most widely used method for multi-fiber output is to use optical glue (usually 353ND) to glue multiple optical fibers in the fiber head, and then grind an...

AI Technical Summary

Problems solved by technology

There is a very big disadvantage in using this kind of multi-fiber output head, that is, the fiber head is very easy to burn

This is because the power density of the fiber end face of the optical fiber that transmits high-power laser is usually very high. If the processing technology of the fiber head is defective, the light emitting end face of multiple fibers is uneven, there are many scratches, or there is dust on the surface, etc., the fiber will be damaged. The local temperature of the head is very high, which causes the carbonization of the optical glue bonding the optical fiber; after the carbonization of the optical glue, an oily substance is volatilized and attached to the end face of the fiber, which further increases the temperature of the end face of the fiber, and the increase in the temperature of the end face of the fiber causes the fiber head The carbonization and volatilization of the deeper optical glue, such a vicious cycle will soon burn the fiber optic head

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