OAM (Orbital Angular Momentum) mode multiplexing device, manufacturing method and multiplexing method

Abstract

The embodiment of the invention provides an OAM (Operation and Maintenance) mode multiplexing device, a manufacturing method and a multiplexing method. The device comprises a mode selection photon lantern, L-mode optical fibers and mode polarization controllers, wherein the mode selection photon lantern is conically shaped and comprises a photon lantern output end and a photon lantern input end; the photon lantern output end is in a conical waist area with the smallest diameter; the photon lantern input end is in an area outside the conical waist area; the photon lantern input end comprises multiple single-mode optical fibers which are arranged at the inlet of a glass casing and are of different diameters and are fixedly arranged and inserted into the glass casing; the photon lantern output end comprises a glass casing outlet at a fused state and multiple single-mode optical fibers at the outlet; the multiple single-mode optical fibers at the outlet comprise a single-mode optical fiberwrapping layer at the fused state and a single-mode optical fiber core leaking outside the single-mode optical fiber wrapping layer; the L-mode optical fibers are fused at the photon lantern output end, are arranged among the mode polarization controllers and are matched with the photon lantern output end; the mode polarization controllers comprise circular ring paddles with grooves; the L-mode optical fibers are fixedly wound on the grooves for fixed circle numbers.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an OAM mode multiplexing device, a manufacturing method and a multiplexing method. Background technique [0002] With the continuous evolution of communication technology and the emergence of a large number of new services, people have put forward higher and higher requirements for the capacity of communication networks, so that only a single-mode optical fiber with a fundamental mode can be transmitted, and the capacity of communication networks is close to the Shannon limit. . Therefore, the MDM (Mode Division Multiplexing, mode division multiplexing) technology is currently used to perform mode multiplexing by mining the spatial dimension of the mode, so as to increase the capacity of the optical fiber communication network. [0003] In the MDM technology, mode multiplexing and mode demultiplexing are a key technology. Among them, the mode multiplexing utilizes...

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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide an OAM mode multiplexing device, manufacturing method and multiplexing method to solve the technical problem of wasting channel resources in the prior art

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