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Low-crosstalk and high-performance photon lantern type mode multiplexer optimization method

An optimization method and high-performance technology, applied in the directions of light guides, optics, instruments, etc., can solve the problems of unsatisfactory performance of photonic lanterns, and achieve the effect of improving mode purity and coupling efficiency, low crosstalk, and reducing crosstalk.

Active Publication Date: 2020-11-27
JILIN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the unsatisfactory performance of the current photon lantern, the present invention proposes and invents an optimization method for a low-crosstalk, high-performance photon lantern-type mode multiplexer. By optimizing the structural parameters of the photon lantern, the distance between each mode of the photon lantern crosstalk, improve performance such as mode coupling efficiency and mode purity

Method used

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  • Low-crosstalk and high-performance photon lantern type mode multiplexer optimization method

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Embodiment 1

[0035] The structure of the mode-selective photonic lantern provided by the embodiment of the present invention is as follows:

[0036] like figure 2 As shown, the mode-selective photon lantern 10 has a structure comprising: an input terminal 11 of the mode-selective photon lantern and an output terminal 15 of the mode-selective photon lantern, and a glass casing is in the middle of the input terminal and the output terminal of the mode-selective photon lantern The tapered transition zone 14 is formed.

[0037] The input end 11 of the mode-selective photonic lantern includes: several single-mode optical fibers 12 of different sizes and a glass sleeve 13, and the several single-mode optical fibers 12 of different sizes are inserted into the glass sleeve 13 in a fixed geometric arrangement. The specific geometric arrangement follows the following rules: image 3 As shown, the three-mode mode-selective photon lantern arranges three single-mode optical fibers 12 of different si...

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Abstract

The invention discloses a low-crosstalk and high-performance photon lantern type mode multiplexer optimization method, and belongs to the technical field of optical fiber communication. The low-crosstalk and high-performance photon lantern type mode multiplexer optimization method comprises the steps of: determining a photon lantern model and performing parameter scanning on the inner diameter ofa glass sleeve at the tail end of a photon lantern and a refractive index of the glass sleeve; analyzing and calculating a relationship between mode crosstalk and mode purity of the photon lantern; performing parameter scanning on the inner diameter of the glass sleeve at the tail end of the photon lantern and the refractive index of the glass sleeve again; and comprehensively analyzing the two parameter intervals, and determining the optimal inner diameter of the glass sleeve at the tail end of the photon lantern and the optimal refractive index of the glass sleeve, so that the optimal innerdiameter and the optimal refractive index meet the photon lantern with low crosstalk, high coupling efficiency and high mode purity simultaneously. By optimizing the inner diameter of the glass sleeveat the output tail end of the photon lantern and the refractive index of the glass sleeve, crosstalk among all modes of the photon lantern is reduced, and the mode purity and the coupling efficiencyof all the modes of the photon lantern are improved. The optimization method provided by the invention is compatible with an existing manufacturing process and can be realized in actual manufacturing.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and specifically relates to a method for optimizing a low-crosstalk, high-performance photonic lantern-type mode multiplexer. Background technique [0002] With the rapid development of information and communication technology today, people's demand for network bandwidth is increasing exponentially, and the transmission rate and capacity of single-mode optical fiber communication systems are getting closer and closer to the nonlinear Shannon limit, making single-mode optical fiber (Single-Mode Fiber, SMF) communication system has been unable to meet the current demand for communication capacity. Therefore, seeking a high-speed and large-capacity communication system has become a major challenge in the current optical communication technology. A mode division multiplexing (MDM) system based on few-mode fiber (Few-Mode Fiber, FMF) can pass through a limited number of The indepe...

Claims

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Application Information

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IPC IPC(8): G02B6/293G02B27/00
CPCG02B6/2938G02B27/0012
Inventor 胡贵军陈佳润
Owner JILIN UNIV
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