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Multi-core fiber based optical transmission structure and device applying same

A multi-core optical fiber and optical transmission technology, applied in the field of communication, can solve the problems of large power loss, weakening the effect of high-order mode optical path, etc., and achieve the effect of reducing power loss and weakening influence

Inactive Publication Date: 2011-06-15
PEKING UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] (1) When single-mode fiber and multi-mode fiber are coupled, the power loss is large;
[0007] (2) When light enters a multimode fiber from a single-mode fiber, the energy of various excited modes decreases from low-order to high-order, and several low-order modes will account for more than 99% of the entire coupling power, thus weakening The effect of higher-order modes on the optical path; and

Method used

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  • Multi-core fiber based optical transmission structure and device applying same
  • Multi-core fiber based optical transmission structure and device applying same
  • Multi-core fiber based optical transmission structure and device applying same

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Embodiment Construction

[0028] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0029] Various embodiments according to the present invention will be described in detail below with reference to the accompanying drawings.

[0030] image 3 A schematic structural diagram of a multi-core optical fiber is shown. like image 3 As shown, the multi-core fiber is formed by embedding seven single-mode fiber cores with different refractive indices symmetrically and uniformly in the fiber cladding, preferably, one of the seven single-mode fiber cores is placed in center, and the other six are arranged in a regular hexagon. exist image 3 In t...

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Abstract

The invention provides a multi-core fiber based multipath parallel optical transmission structure, comprising multiple single mode / multimode fibers and multiple multi-core fibers, wherein multiple single mode / multimode fibers and multiple multi-core fibers are alternately connected. By applying the optical transmission structure, the power loss during the optical coupling process can be reduced, and the influence of a high order mode to an optical path can be weakened.

Description

technical field [0001] The present invention relates to the field of communication technology, and more specifically, to a multi-channel parallel optical transmission structure based on multi-core optical fibers, and devices with the optical transmission structure, such as lasers and sensors. Background technique [0002] According to the characteristics of the optical fiber propagation mode, the optical fiber can be divided into two types: single-mode optical fiber and multi-mode optical fiber. Single-mode fiber allows only one eigenmode to propagate, while multimode fiber can transmit hundreds of modes. [0003] The so-called SMS (Single mode-Multimode-Single mode) optical transmission structure refers to cascading a section of single-mode fiber, multi-mode fiber, and single-mode fiber to form a multi-channel parallel feedback fiber structure, such as figure 1 shown. The characteristic of this optical transmission structure is: when the input light is coupled into the mu...

Claims

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Application Information

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IPC IPC(8): G02B6/24H01S3/23G01D21/00
Inventor 余晓琦徐连宇王子南路萍王大量王翠云王玉杰贾雷蒋云朱立新李正斌
Owner PEKING UNIV
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