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An Off-Axis Optical Fiber Rotary Connector Based on Ring Cylindrical Lens

A technology of rotary connector and ring column, which is applied in the field of optical signal transmission in optical fiber communication, can solve the problems of large coupling loss, limited off-axis space, and high difficulty of assembly, and achieve the effect of improving coupling efficiency

Inactive Publication Date: 2017-03-22
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the off-axis optical fiber rotary connectors that have appeared at home and abroad mainly have problems such as large coupling loss, high assembly difficulty, and limited off-axis space.

Method used

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  • An Off-Axis Optical Fiber Rotary Connector Based on Ring Cylindrical Lens
  • An Off-Axis Optical Fiber Rotary Connector Based on Ring Cylindrical Lens

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 It is a schematic diagram of the cross-sectional structure of the present invention, and the optical input end is composed of main optical fiber-1, 1×16 optical splitter-2, segmented optical fiber-3, self-focusing lens array collimator-4 and annular cylindrical lens-5 ; The optical output end is composed of a circular cylindrical lens 2 6 , a self-focusing lens array collimator 2 7 , a segmented optical fiber 2 8 , a 1×16 optical splitter 2 9 and a main optical fiber 2 10 . The optical input end and the optical output end rotate relatively, have the same hollow rotation axis 11, and are symmetrical about the rotation interface, so that off-axis bidirectional transmission of optical signals can be realized.

[0026] Annular cylindrical lens 1 5 and annular cylindrical lens 2 6 are ring-shaped, and the cross section obtained by cutting the annular cylindrical lens along a plane perpendicular to the rotation interface and passing through the rotation axis is semic...

Embodiment 2

[0030] figure 1 It is a schematic diagram of the cross-sectional structure of the present invention, and the optical input end is composed of main optical fiber-1, 1×32 optical splitter-2, segmented optical fiber-3, self-focusing lens array collimator-4 and annular cylindrical lens-5 ; The optical output end is composed of a circular cylindrical lens 2 6 , a self-focusing lens array collimator 2 7 , a segmented optical fiber 2 8 , a 1×32 optical splitter 2 9 and a main optical fiber 2 10 . The optical input end and the optical output end rotate relatively, have the same hollow rotation axis 11, and are symmetrical about the rotation interface, so that off-axis bidirectional transmission of optical signals can be realized.

[0031] Annular cylindrical lens 1 5 and annular cylindrical lens 2 6 are ring-shaped, and the cross section obtained by cutting the annular cylindrical lens along a plane perpendicular to the rotation interface and passing through the rotation axis is semic...

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Abstract

The invention discloses an off-axis optical fiber rotating connector based on annular cylindrical lenses. The off-axis optical fiber rotating connector based on the annular cylindrical lenses comprises an optical inputting end and an optical outputting end, wherein the optical inputting end and the optical outputting end are symmetrically arrayed along a rotating interface; the structure of the optical inputting end is the same with that of the optical outputting end; the optical inputting end and the optical outputting end rotate around a hollow rotating shaft relatively so as to realize bidirectional transmission of optical signals; the inputted optical signals enter a first optical branching device via a main optical fiber, and are coupled to various optical fiber sections of a first sectioned optical fiber in a power equal-dividing manner; and after being subjected to collimation and beam expanding via a self-focusing lens array, the same optical signals enter a first annular cylindrical lens and are collimated into parallel light, the parallel light passes through a rotating interface, is received by a second annular cylindrical lens, enters a second self-focusing lens array collimator in a coupled manner, is gathered to enter various optical fiber sections of a second sectioned optical fiber, is coupled to a second main optical fiber in a second optical branching device in a power superposed manner and is outputted. By the design of the annular cylindrical lenses, the off-axis rotating transmission optical signal coupling efficiency is improved, and the off-axis optical fiber rotating connector can be designed flexibly according to requirements on the size of actual off-axis space.

Description

technical field [0001] The invention relates to an off-axis optical fiber rotary connector for transmitting optical signals between relative rotating parts, and belongs to the technical field of optical signal transmission in optical fiber communication. Background technique [0002] Optical fiber rotary connector is an optical communication device that transmits optical signals between two relatively rotating parts based on optical fibers. It is mainly used in communication occasions where at least one of the two information platforms that communicate with each other is in a rotating state, such as military The rotating periscope and the stationary control room on the armored vehicle, the rotating scanning device and the stationary signal processor on the CT scanner, the rotating antenna array and the stationary control terminal on the radar, etc. [0003] According to the feature of whether the optical axis is on the rotation axis, the optical fiber rotary connector can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/28G02B6/32G02B6/36
Inventor 李毅刘飞孙瑶唐佳茵郝如龙袁文瑞郑鸿柱陈建坤陈少娟方宝英王小华肖寒
Owner UNIV OF SHANGHAI FOR SCI & TECH