Ferrule, fiber connector and manufacturing method of ferrule

Abstract

The invention provides a ferrule, a fiber connector and a manufacturing method of the ferrule. The ferrule comprises a ferrule body and at least one fiber; the fiber penetrates into a through whole arranged in axially in the ferrule body, the first end of the fiber is positioned in the through hole, and a vertical distance between the end surface of the first end of the fiber and a plane of a connection end surface of the ferrule core is a first preset distance, and a gap can be formed between the fiber of the ferrule and a fiber of a another fiber after butt joint of the ferrules via the first preset distance; the through hole comprises a first through hole segment, the plane where the top of the first through hole segment is positioned in the same with that where the connection end surface of the ferrule body is positioned, and an intersection of projection of the fiber in the axial direction and projection of a random cross section of the first through hole segment in the directionvertical to the axial direction equals projection of the fiber in the axial direction; and the outer wall of the fiber positioned in the first through hole segment is plated with an anti-reflection film. According to the ferrule, light transmission loss is low, and dust tolerance is high; and when the ferrule is plugged with the other ferrule, a plugging force is lower and the plugging reliabilityis higher.

Description

technical field [0001] The embodiments of the present application relate to the field of optical communications, and in particular, to a ferrule, an optical fiber connector, and a method for manufacturing the ferrule. Background technique [0002] In the optical communication system using optical fiber as the transmission medium, the connection between optical fibers of optical communication components is divided into permanent connection and active connection. The permanent connection is fusion splicing, and the active connection is connected by optical fiber connector. [0003] Existing fiber optic connectors on the market include conventional mechanical transfer (Mechanical transfer, MT for short) ferrule fiber optic connectors, Lens ferrule fiber optic connectors and non-contact (Non-contact, NC for short) fiber optic connectors Wait. The optical fiber of the conventional MT ferrule fiber optic connector protrudes from the connection end face by 1-3.5 μm, and the dockin...

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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