Device and method for quickly coupling laser with large divergence angle to single-mode fiber

A technology of single-mode fiber and large divergence, which is applied in the field of devices that couple laser with large divergence angle to single-mode fiber and quickly couple laser with large divergence angle to single-mode fiber. advanced questions

Active Publication Date: 2021-05-07
珠海市运泰利自动化设备有限公司
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Problems solved by technology

However, in practical applications, it has high requirements on the positioning accuracy of the adjustment mechanism, and is also very sensitive to external vibrations, which limits its application to a certain extent.

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  • Device and method for quickly coupling laser with large divergence angle to single-mode fiber
  • Device and method for quickly coupling laser with large divergence angle to single-mode fiber
  • Device and method for quickly coupling laser with large divergence angle to single-mode fiber

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Embodiment Construction

[0040] Such as Figure 1 to Figure 7 Shown, the present invention will be described in more detail below in conjunction with accompanying drawing.

[0041] Such as figure 1 A laser chip 1 to be coupled into an optical fiber is shown, the divergence angle of the laser chip is 2θ, and the dotted line in the figure indicates the optical axis.

[0042] A linear guide rail 9 is arranged on the five-axis adjustment platform, and a beam quality analyzer 10 movable along the linear guide rail 9 is arranged on the linear guide rail 9 . Through the cooperation of the five-axis adjustment platform, the linear guide rail 9 and the beam quality analyzer 10, the laser chip 1, the collimator mirror 2, the beam splitter prism 3, and the corner cube prism 4 , the poses of the industrial camera 5, the coupling objective lens 6 and the fiber circulator 7 are adjusted in place. Specifically, perform the following operations.

[0043] Such as figure 1 As shown, the laser chip 1 is fixed on a ...

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Abstract

The invention provides a device and method for quickly coupling a large divergence angle laser to a single-mode optical fiber with a simple structure, small volume, and suitable for coupling a large divergence angle laser. The invention comprises a laser chip, a collimating mirror, a beam splitter, a corner cube, an industrial camera, a coupling objective lens and a fiber optic circulator; the method for optical fiber coupling is as follows: light the laser chip, pass through the beam splitter and the corner cube, and place it in the industrial camera A reference spot is formed on the upper surface of the fiber laser, and the fiber laser is turned on. The laser beam emitted by the fiber laser is incident from port 1 of the fiber circulator, and then exits from port 2 of the fiber circulator. Imaging in the industrial camera to form a coupling spot; finally, the reference spot and the coupling spot in the industrial camera image coincide, indicating that the laser chip (1) is in the same alignment as the coupling end face of the single-mode fiber to be coupled, and the coupling is completed. The invention can be applied to the field of optical fibers.

Description

technical field [0001] The invention relates to the field of optical fibers, in particular to a device for quickly coupling laser with a large divergence angle to a single-mode fiber and a method for coupling the laser with a large divergence angle to the single-mode fiber by using the device. Background technique [0002] Optical fiber is the transmission channel of optical signal and the key material of optical fiber communication. The two main characteristics of optical fiber are loss and dispersion. Loss is the attenuation or loss of the optical signal per unit length, expressed in db / km. This parameter is related to the transmission distance of the optical signal. The greater the loss, the shorter the transmission distance. The dispersion of the fiber is mainly related to the pulse broadening. [0003] According to the transmission mode of light in the optical fiber, it can be divided into: single-mode optical fiber and multi-mode optical fiber. The central glass cor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/42
CPCG02B6/4204G02B6/4208G02B6/4214G02B6/4222G02B6/4296
Inventor 赖宣润王灵光黄丽芳
Owner 珠海市运泰利自动化设备有限公司
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