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Optical coupling structure and plug in-type optical assembly

A technology of optical coupling and optical components, which is applied in the coupling of optical waveguides, optical components, light guides, etc., can solve the problems of reducing light reflection and reducing optical coupling efficiency, and achieves the effect of reducing reflection and improving optical coupling efficiency.

Inactive Publication Date: 2016-06-15
SOURCE PHOTONICS CHENGDU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem in the prior art that when the end face of the optical fiber end is set as an inclined surface, the reflection of light is reduced and the coupling efficiency of light is also reduced, and a method that can reduce the reflection of light is provided. , an optical coupling structure that does not reduce the coupling efficiency of light

Method used

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  • Optical coupling structure and plug in-type optical assembly
  • Optical coupling structure and plug in-type optical assembly
  • Optical coupling structure and plug in-type optical assembly

Examples

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Embodiment 1

[0026] Embodiment 1: as figure 2 As shown, this embodiment provides an optical coupling structure, including,

[0027] An optical fiber 1, the optical fiber 1 has a front end surface 111 at a certain angle α with a surface perpendicular to the fiber axis direction (abbreviated as the fiber axis vertical surface 103), α>0 degrees; preferably, the value range of α is 0 degrees <α<15 degrees, such as 4 degrees, 6 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees.

[0028] The first transmission medium is connected to the front end face 111, and is used to couple light into the optical fiber 1 through the front end face 111; in this embodiment, the first transmission medium is air or light-transmitting glue, such as, A common light generating device couples incident light 101 into the optical fiber 1 through air.

[0029] The optical fiber 1 is bent or inclined relative to the incident light 101 (or the optical fiber 1 is bent or inclined relative to the reference plane 100...

Embodiment 2

[0033] Embodiment 2: In Embodiment 1, we provided that the angle θ range between the incident light 101 and the normal line 104 of the front surface is set as However, in practical applications, the coupling efficiency of the optical fiber 1 is not a process of linear and symmetrical increase or decrease. Therefore, in this embodiment, the impact of the first transmission medium is not considered and the incident light 101 is directly connected to the front end The angle θ range of the surface normal 104 is set to be α or etc., can effectively realize the effect of improving the coupling efficiency of light while reducing the reflection of light.

Embodiment 3

[0034] Embodiment 3: as image 3 As shown, this embodiment provides a pluggable optical component with less reflected light when light is incident on light and high optical coupling efficiency, including a housing 2 and an optical fiber 1 arranged in the center of the housing 2, and the optical fiber 1 is exposed from the housing The free end of the body 2 has a front end surface 111 at a certain angle α with a surface perpendicular to the fiber axis direction (abbreviated as the fiber axis vertical surface 103), where α>0°; the optical fiber 1 is bent or inclined relative to the incident light 101 , so that the angle between the incident light 101 and the normal 104 of the front end surface θ>α.

[0035] In some embodiments, the value range of the angle θ between the incident light 101 and the front surface normal 104 is: where n 介质 is the refractive index of the transmission medium before the light enters the fiber, n 光纤 is the refractive index of the optical fiber 1; pr...

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Abstract

The invention relates to the field of fiber communication, and particularly relates to an optical coupling structure and a plug in-type optical assembly. The optical coupling structure comprises a fiber and a first transmission medium, wherein the fiber has a front end surface with a certain included angle alpha with a surface vertical to a fiber axis direction and alpha is larger than 0 DEG; the first transmission medium is connected with the front end surface for coupling the light to the fiber via the front end surface; and the fiber is set in a bent or inclined mode in relative to incident light to enable the included angle theta between the incident light and the normal line of the front end surface to be larger than alpha. According to the optical coupling structure and the plug in-type optical assembly provided by the invention, through setting the fiber with the inclined front end surface with a preset inclined angle in a bent or inclined mode, the included angle between the incident light and the front end surface of the fiber is smaller, reflection of the incident light is further reduced, and as the fiber is set in a bent or inclined mode, the angle between the axial direction of an end section where the front end surface of the fiber is and refracted light entering the fiber is reduced, and the optical coupling efficiency is thus improved.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to an optical coupling structure and a pluggable optical component. Background technique [0002] In the field of optical communication, it is often encountered that light enters another transmission medium from one transmission medium (for example, light enters an optical fiber from a light generating device). There will be refraction and reflection of light at the interface of the medium at the same time. Undoubtedly, we hope to minimize the reflection of light. Therefore, in some existing optical coupling structures involving optical fibers, the end face of the optical fiber end Set a certain angle of inclination to reduce the reflection of light, that is, the end face of the fiber end is no longer a plane perpendicular to the axis of the fiber, but an inclined plane with a certain angle α to the plane perpendicular to the axis of the fiber. Usually, this The larger th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/26G02B6/38
CPCG02B6/262G02B6/38
Inventor 孙路鲁黄远军齐铁良张勇张强吴晟
Owner SOURCE PHOTONICS CHENGDU