Optical fiber insert core and preparation method thereof as well as quick joint

Abstract

The invention relates to an optical fiber insert core and a preparation method thereof as well as a quick joint. The optical fiber insert core comprises a cylindrical insert core body, and the front end of the cylindrical insert core body is in a frustum shape. The optical fiber insert core is characterized in that the cylindrical insert core body is internally provided with an insert core hole and a tail taper hole; the insert core hole and the tail taper hole are centrally arranged front and back along the horizontal axial direction of the cylindrical insert core body; the cross section of the insert core hole is in a rectangular shape or a triangular shape or an elliptical shape or an ovoid shape, or the cross section of the insert core hole is in a circular shape, and the circular inner wall of the insert core hole is provided with at least one side groove along the horizontal axial direction of the cylindrical insert core body; the front end of the side groove penetrates through the front end surface of the cylindrical insert core body, and the rear end of the side groove is communicated with the front end of the tail taper hole. In the invention, the optical fiber insert core substitutes the insert core as an optical fiber coupling butt-joint collimating device for a glass capillary tube, thereby manufacturing an optical fiber butt-joint low-loss mechanical type wiring terminal and manufacturing a series of high-quality (low-insertion loss and high-reflection loss) field assembled quick joints by adopting an optical fiber embedding method.

Description

technical field [0001] The invention relates to the technical field of on-site mechanical splicing of optical fibers, in particular to an optical fiber ferrule, a preparation method and a quick connector. Background technique [0002] There are three basic methods for optical fiber splicing in optical communication: one is that the optical fiber is polished and polished by the factory, and the optical fiber connector is connected in the adapter through the ceramic sleeve of the adapter; the other is on-site optical fiber fusion; style continuation. The present invention relates to the field mechanical splicing for optical fiber. [0003] The methods currently used for optical fiber on-site mechanical splicing are divided into two categories: [0004] One is to butt two optical fibers in a collimation sleeve. At present, the collimation sleeve is mostly a glass capillary filled with optical coupling matching liquid, and the optical fiber is fixed after being penetrated. Th...

AI Technical Summary

Problems solved by technology

The disadvantage is that the aperture of the glass capillary cannot be very precise, and the diameter of the optical fiber is 125 microns. Considering the possible positive and negative errors of the capillary, the glass capillary is generally 130 microns

Its disadvantage is: due to the on-site conditions, only simple polishing can be done on the end face of the optical fiber.

Its disadvantages are: complex structure, high price, and the fiber insertion loss and reflection loss are not good enough

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