Multi-core few-mode optical fiber multiplexer based on photon lantern and manufacturing method of multi-core few-mode optical fiber multiplexer

Abstract

The invention relates to a multi-core few-mode optical fiber multiplexer based on a photon lantern and a manufacturing method thereof, the multi-core few-mode optical fiber multiplexer comprises a multi-mode optical fiber photon lantern and a multi-core optical fiber photon lantern, the multi-mode optical fiber photon lantern comprises a double-layer glass tube optical fiber bundle and an output multi-mode optical fiber; the multi-core optical fiber photon lantern comprises a single-layer glass tube optical fiber bundle and an output multi-core few-mode optical fiber, wherein the output multi-core few-mode optical fiber is welded with the taper waist of the single-layer glass tube optical fiber bundle; wherein the number of output multi-mode optical fibers of the multi-mode optical fiber photon lantern is equal to that of input multi-mode optical fibers of the multi-core optical fiber photon lantern, and the output multi-mode optical fibers and the input multi-mode optical fibers are welded one by one, so that the problem that a traditional optical fiber multiplexer cannot meet the requirements of a multi-core few-mode optical fiber on fiber core multiplexing and mode multiplexing at the same time is solved; the stability of a few-mode multi-core optical fiber multiplexer with a space structure is not easy to guarantee, the size is large, and integration and packaging are difficult.

Description

Technical field: [0001] The invention belongs to the technical field of optical fibers, and mainly relates to a multi-core few-mode optical fiber multiplexer based on photonic lanterns and a manufacturing method thereof. Background technique: [0002] In recent years, as the single-mode optical fiber transmission system has been approaching its limit, as an effective solution to the capacity problem of the current optical communication system, the space division multiplexing technology has increasingly become a focus of attention. At present, there are two main types of space division multiplexing technologies: core division multiplexing based on multi-core fibers and mode division multiplexing based on few-mode fibers. [0003] For multi-core fibers, since light can independently propagate between the cores, the transmission capacity can be increased by increasing the number of cores, but the number of cores is limited by the fiber size. For few-mode fibers, light can prop...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the fact that the traditional optical fiber multiplexer cannot meet the core multiplexing and mode multiplexing requirements of multi-core and few-mode optical fibers at the same time, and the stability of the few-mode multi-core optical fiber multiplexer with spatial structure is not easy to guarantee, and it is large in size and difficult to integrate The problem of encapsulation, the present invention provides a kind of multi-core few-mode optical fiber multiplexer based on photon lantern and its manufacturing method

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