Mechanical transmission mt ferrule and single mode fiber optic connector

Abstract

The embodiment of the invention provides a mechanical transfer (MT) inserting core and a single mode fiber connector. The MT inserting core comprises a first hole, and a first waveguide is inserted into the first hole, and comprises a first single mode fiber, a second sub-waveguide and a third sub-waveguide. When a light signal is transmitted through the first single mode fiber, the second sub-waveguide and the third sub-waveguide in sequence, the mode field of a fundamental mode of the light signal is enlarged in the second sub-waveguide, the light signal is excited to at least one high order mode in the third sub-waveguide, the fundamental mode and the excited high order modes of the light signal interfere with each other in the third sub-waveguide, and a mode field of the light signal is enlarged. Due to the fact that the mode field of the light signal is enlarged, under the conditions of that the dust size of the MT inserting core is not changed, the dust prevention performance of the MT inserting core is improved to a certain degree, and then the insertion loss of the fiber connector adopting the MT inserting core is reduced to a certain degree.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and in particular, to a mechanical transfer (Mechanical Transfer, MT for short) ferrule and a single-mode optical fiber connector. Background technique [0002] The carrier of optical information is optical fiber, which is mainly divided into two types: single-mode optical fiber and multi-mode optical fiber. Optical fiber connector is the mainstream trend to solve the information transmission between board level and cabinet. It can precisely butt the two end faces of the optical fiber, so that the optical energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent. Based on the classification of single-mode optical fiber and multi-mode optical fiber, optical fiber connectors are also divided into two types: single-mode optical fiber connectors and multi-mode optical fiber connectors. The core diameter of single-mode optical fi...

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Problems solved by technology

[0004] In the prior art, since the core diameter of the single-mode fiber is very small, it is difficult to realize the end face of the single-mode fiber located in the MT ferrule of the male head and the corresponding single-mode fiber located in the MT ferrule of the female head. Precise alignment of the end face of the fiber optic connector, which will easily cause a large insertion loss of the fiber optic connector

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