Insertion core, optical fiber connector and manufacturing method of insertion core

Abstract

The embodiment of the invention provides an insertion core, an optical fiber connector and a preparation method of the insertion core. The insertion core comprises an insertion core body and at least one optical fiber. The optical fiber penetrates through a through hole axially arranged in the insertion core body, a first end of the optical fiber is located in the through hole, the vertical distance between the end face of the first end of the optical fiber and the plane where the connecting end face of the insertion core body is located is a first preset distance, and the first preset distance enables the end face of the first end of the optical fiber to be located after the insertion core is in butt joint with another insertion core, so that a gap distance is formed between the optical fiber of one insertion core and the optical fiber of the other insertion core; the through hole comprises a first-section through hole, the plane where the top of the first-section through hole is located is the plane where the connecting end face of the ferrule body is located, and the intersection of the projection of the optical fiber in the axial direction and the projection of any cross section, perpendicular to the axial direction, of the first-section through hole is the projection of the optical fiber in the axial direction; and an anti-reflection film is plated on the outer wall of the optical fiber in the first section of through hole. According to the insertion core provided by the embodiment of the invention, the transmission loss of light is relatively small, the dust holding capacity is relatively good, and when the insertion core provided by the embodiment of the invention is inserted into and pulled out of another insertion core, the insertion and pulling force is relatively small, and the insertion and pulling reliability is relatively high.

Description

Technical field [0001] The present application embodiment relates to the field of optical communication, and more particularly to a ferrule, a fiber optic connector, and a method of fabricating the ferrule. Background technique [0002] In the optical communication system of the optical fiber as a transmission medium, the connection between the optical fibers of the optical communication element is divided into a permanent connection and active connection, and the permanent connection is welded, and the active connection is connected to the fiber optic connector. [0003] The existing fiber optic connector in the market includes conventional mechanical docking transmission (MT) ferrule optical fiber connector, lens LENS ferrule fiber optic connector and non-contact (Non-Contact, referred to as NC) fiber optic connector Wait. Conventional MT-chuck fiber optic connector optical fiber protrusions 1-3.5 μm, docking mode relies on mechanical physical contact; lens LENS ferrule fiber o...

AI Technical Summary

Problems solved by technology

The existing NC optical fiber connectors cannot realize the non-physical contact of the optical fibers of the two optical fiber connectors when they are docked with all kinds of optical fiber connectors including ferrules, so that the insertion and extraction force of the two optical fiber connectors is high when they are docked. , when plugging and unplugging many times, the connection end face will be worn and polluted; and the optical fiber in the other optical fiber connector that is docked with the existing NC optical fiber connector is easy to touch the ferrule body of the NC optical fiber connector when docking , resulting in wear and tear of the optical fiber, so the reliability of plugging and unplugging is not high. To improve the reliability of plugging and unplugging, it is necessary to manufacture NC fiber optic connectors with high precision, and the cost of fiber optic connectors is relatively high.

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