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Opposite-emitting type optical fiber coupling auxiliary regulating device and coupling method

A technology of through-beam optical fiber and adjustment device, which is applied in the field of optical fiber, can solve the problems of difficulty in adjustment, difficulty in adjustment, and impossibility of application, etc., and achieve the effect of convenient use, simple device, and simple and clear adjustment process

Inactive Publication Date: 2010-11-10
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

This patent proposes an effective method for adjusting the optical fiber, but it is still subject to some restrictions in use. Since the patent uses the reflection imaging method at the incident end, a large number of optical elements ( figure 1 Units 1-7 in the middle) are inserted into the front end of the fiber coupling head, especially 3 is an imaging device, which is relatively large and cannot be applied to a relatively compact optical path; secondly, the adjustment of this scheme is still difficult, especially the matching of the optical fiber and the laser beam When it is bad, it is more difficult to adjust

Method used

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  • Opposite-emitting type optical fiber coupling auxiliary regulating device and coupling method
  • Opposite-emitting type optical fiber coupling auxiliary regulating device and coupling method
  • Opposite-emitting type optical fiber coupling auxiliary regulating device and coupling method

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0030] see first figure 2 , figure 2 It is a structural schematic diagram of the through-beam optical fiber auxiliary adjustment device of the present invention. It can be seen from the figure that the composition of the through-beam optical fiber coupling auxiliary adjustment device of the present invention is: the laser diode 011, the collimator lens 009, and the half-wave plate 008 are sequentially connected on the same optical axis. , diaphragm 007, coupling lens 006 and fiber optic connector 005 are arranged on a base 010, the light-emitting surface of the laser diode 011 is located at the front focal plane of the collimator lens 009, and the fiber optic connector 005 The center of the fiber end face is located at the focal point of the coupling lens 006 .

[0031]...

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Abstract

The invention relates to an opposite-emitting type optical fiber coupling auxiliary regulating device and a coupling method, which are used for coupling space laser beams to optical fibers. The device has a structure that a laser diode, a collimation lens, a half-wave plate, a diaphragm, a coupling lens and an optical fiber connector are coaxially and sequentially arranged on one base, the light-emitting surface of the laser diode is positioned on the front focal surface of the collimation lens, and the center of the optical fiber end surface of the optical connector is positioned in the focus of the coupling lens. The invention has the characteristics of simple structure, convenient use and operation and accurate and reliable coupling.

Description

technical field [0001] The present invention relates to an optical fiber, in particular to an auxiliary adjusting device and a coupling method for through-beam optical fiber coupling, in particular to an auxiliary adjusting device and a coupling method for coupling a laser from space to an optical fiber. Background technique [0002] Optical fibers have very important applications in scientific research and high-tech fields. In many occasions, it is necessary to couple laser light from free space into single-mode optical fibers. Single-mode optical fibers have the characteristics of thin core diameter (a few microns) and small numerical aperture (about 0.1). It is more difficult to determine the coupling of the light beam from the space propagation to the fiber propagation. [0003] Coupling the laser from space to the optical fiber is currently mostly used to adjust the multimode fiber first, and then remove the multimode fiber after obtaining the maximum coupling, and repl...

Claims

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Application Information

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IPC IPC(8): G02B6/24G02B7/00
Inventor 魏荣史春燕王育竹
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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