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

A single-mode fiber and large divergence technology, which is applied in the field of devices that couple a large divergence angle laser to a single mode fiber and quickly couple a large divergence angle laser to a single mode fiber. Advanced problems, to achieve the effect of facilitating large-scale industrialization and automation, saving equipment costs, and improving coupling efficiency

Active Publication Date: 2019-12-31
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.

Method used

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

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Embodiment Construction

[0040] like Figure 1 to Figure 7 As shown, the present invention will be described in more detail below with reference to the accompanying drawings.

[0041] like 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 represents the optical axis.

[0042] A linear guide 9 is arranged on the five-axis adjustment platform, and a beam quality analyzer 10 that can move along the linear guide 9 is arranged on the linear guide 9 . Through the cooperation of the five-axis adjustment platform, the linear guide 9 and the beam quality analyzer 10, the laser chip 1, the collimator 2, the beam splitting prism 3, and the corner prism 4 , The industrial camera 5 , the coupling objective lens 6 and the optical fiber circulator 7 are adjusted in position. The specific operation is as follows.

[0043] like figure 1 As shown, the laser chip 1 is fixed on the five-axis adjustment platform. Turn...

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Abstract

The invention provides a device and method for quickly coupling large-divergence-angle laser to a single-mode optical fiber. The device is simple in structure, small in size and suitable for couplinglarge-divergence-angle laser. The device comprises a laser chip, a collimating lens, a beam splitter prism, a pyramid prism, an industrial camera, a coupling objective lens and an optical fiber circulator. According to the method for carrying out optical fiber coupling, the laser chip is lit; a reference light spot is formed on the industrial camera through the beam splitter prism and the pyramidprism; an optical fiber laser is lit; a laser beam emitted by the optical fiber laser enters from the port I of the optical fiber circulator, then exits from the port II of the optical fiber circulator, reaches the beam splitter prism after passing through the coupling objective lens and a diaphragm, and is imaged in the industrial camera after being reflected so as to form a coupling light spot;and finally, the reference light spot and coupling light spot in the industrial camera image are superposed, it is indicated that the laser chip (1) is aligned with the coupling end surface of an to-be-coupled single-mode optical fiber, and therefore, coupling is completed. The device and method of the invention can be applied to the field of optical fibers.

Description

Technical field [0001] The present invention relates to the field of optical fibers, and in particular, to a device for quickly coupling a large divergence angle laser to a single-mode optical fiber and a method for coupling a large divergence angle laser to a single-mode optical fiber using the device. Background technique [0002] Optical fiber is a transmission channel for optical signals and a key material for optical fiber communications. Two main characteristics of optical fiber are loss and dispersion. Loss is the attenuation or loss of an 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. Fiber dispersion is primarily related to pulse broadening. [0003] According to the transmission mode of light in optical fiber, it can be divided into: single-mode optical fiber and multi-mode optical fiber. The central glass core of multim...

Claims

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Application Information

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Patent Type & Authority Applications(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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