Optical fiber adapter and application thereof

A technology of an optical fiber adapter and an outer casing, applied to the optical fiber adapter and its application field, can solve the problems of complex production process of the optical fiber adapter, affecting the transmission performance of the polarization-maintaining optical fiber, complex production process, etc., and achieves fast and good transmission performance, simple structure, and production simple craftsmanship

Active Publication Date: 2013-11-27
河北四方通信设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is an angular deviation of 2° between the two optical axes, the extinction ratio coefficient will drop sharply from 30dB to 25dB, which will affect the transmission performance of the polarization maintaining fiber
In order to ensure the accuracy of axis alignment when two polarization-maintaining optical fibers are connected, it is required that the positioning key of the connector and the optical axis be connected with high precision, which makes the production process of polarization-maintaining optical fiber connectors more complicated than that of ordinary single-mode optical fiber connectors. , low production efficiency
High-precision fiber optic adapters also have the defects of complex production process and high production cost.

Method used

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  • Optical fiber adapter and application thereof
  • Optical fiber adapter and application thereof
  • Optical fiber adapter and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Example 1 Optical fiber adapter

[0040] The structure of this embodiment is as Figure 1-3 As shown, it includes an outer casing 1, an inner casing 2, a first sleeve 3, a second sleeve 4, and a ceramic sleeve 5.

[0041] The main body of the outer shell 1 is a T-shaped revolving structure, such as Figure 4 Shown. The axial end of the larger diameter part of the outer shell 1 is provided with a first groove 11 and a second groove 12 communicating with each other, and the two are connected to form a stepped groove structure. The outer shell 1 is provided with four radially penetrating threaded holes 14 equiangularly on the outer wall corresponding to the first groove 11 along the circumferential direction. The end surface where the first groove 11 and the second groove 12 meet (Set this end surface as the inner end surface of the first groove 11) is provided with an axial recess ( Figure 4 The center is the annular groove 13 recessed to the left, and the left end of the a...

Embodiment 2

[0051] Example 2 Application of fiber optic adapter in Example 1

[0052] An application of the optical fiber adapter described in embodiment 1, which is used to connect two polarization-maintaining optical fiber connectors 71 and 72, such as Image 6 As shown in the figure, the polarization-maintaining fiber connectors 71 and 72 are used to connect the polarization-maintaining fibers 61 and 62.

[0053] The polarization-maintaining optical fiber connectors 71, 72 have the same structure as the polarization-maintaining optical fiber connectors in the prior art, including polarization-maintaining fibers 61, 62, ceramic ferrules 73, inner sleeve 74, and outer sleeve 75, such as Image 6 Shown. The inner sleeve 74 is sleeved in the outer sleeve 75, the ceramic ferrule 73 is inserted in the inner sleeve 74, and the outer wall of the inner sleeve 74 is provided with a positioning key 76.

[0054] The center line of the cross section of the polarization maintaining fibers 61 and 62 is th...

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PUM

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Abstract

The invention discloses an optical fiber adapter and the application thereof. The optical fiber adapter comprises a ceramic sleeve which is axially communicated, a first casing pipe, a second casing pipe, an inner shell body and an outer shell body, wherein the first casing pipe and the second casing pipe are mutually connected in a butt joint mode and are respectively arranged outside the ceramic sleeve in a sleeved mode, the first casing pipe is sleeved with the inner shell body, the second casing pipe is sleeved with the outer shell body, and the inner shell body is matched with the outer shell body in a clamping mode. The optical fiber adapter is used for connecting polarization maintaining optical fiber connectors, the precision of butt joint of optical axes of two optical fibers can be guaranteed, the extinction ratio is in the maximum value, and the transmission performance of the optical fibers is optimal. In addition, the requirement for the manufacturing precision of the polarization maintaining optical fiber connectors is low, the manufacturing technology is simple, and manufacturing cost is low. The optical fiber adapter is suitable for the technical field of optical fiber transmission.

Description

technical field [0001] The invention belongs to the technical field of optical fiber transmission, and relates to an optical fiber adapter and its application. Background technique [0002] Polarization-maintaining fiber is used to transmit linearly polarized light to ensure that the polarization states of input light and output light are in the same position, and fiber optic connectors are used to realize the connection of optical fibers. When two polarization-maintaining optical fiber connectors are connected, a high-precision optical fiber adapter is required for alignment and connection to ensure the accuracy of the optical axes of the two polarization-maintaining optical fibers. If there is an angular deviation of 2° between the two optical axes, the extinction ratio coefficient will drop sharply from 30dB to 25dB, which will affect the transmission performance of the polarization maintaining fiber. In order to ensure the accuracy of axis alignment when two polarizatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/38
Inventor 李红飞张爱民杨海涛姚猛
Owner 河北四方通信设备有限公司
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