Space adjustment mechanism for aligning polarization-maintaining fiber collimators, device and alignment method thereof
A polarization-maintaining optical fiber and adjustment mechanism technology, applied in installation, optics, instruments, etc., can solve the problems of low adjustment efficiency, lack of reference physical benchmark, and large optical measurement error, so as to reduce the dependence on skills and realize online measurement and adjustment The effect of improving efficiency
Inactive Publication Date: 2013-07-31
天津峻烽科技有限公司
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is that, firstly, in order to overcome the existing polarization-maintaining fiber collimator alignment device, the number of mechanical moving parts is large, the lack of reference physical reference, the axis needs to be fixed in advance, and the degree of dependence on the experience of the operator is high. , the disadvantages of low adjustment efficiency and large optical measurement error, the present invention provides a polarization-maintaining fiber collimator alignment space adjustment mechanism, which provides an auxiliary reference physical reference without pre-setting the axis; in addition, the present invention can solve the problem of realizing Quantitatively measure the optical power and polarization extinction ratio, improve the adjustment efficiency, reduce the dependence on the operator's experience, and also provide an alignment device using the space adjustment mechanism, and use the device to align two polarization-maintaining optical fibers Alignment methods for collimators
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[0044] Such as figure 2 As shown, a space adjustment mechanism for alignment of a polarization-maintaining fiber collimator of the present invention includes a sliding base 41, two sets of mechanical adjustment parts (38, 40) with the same structure and a set of reference physical reference parts 39, refer to The physical reference part 39 is located between two sets of mechanical adjustment parts (38, 40) and all three parts are slidably connected to the sliding base 41 with V-shaped sliding grooves;
[0045] The one mechanical adjustment part includes a three-axis displacement platform and a three-dimensional gimbal;
[0046] The three-axis translation stage is used for the translation adjustment of the mechanical adjustment parts (38, 40) along the orthogonal coordinate system, including a Z-axis translation slider 43 on the sliding base 41 and slidingly connected with it, a A Y-axis translation slider 44 on the Z-axis translation slider 43 and slidably connected thereto,...
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The invention provides a space adjustment mechanism for aligning polarization-maintaining fiber collimators, which comprises a sliding substrate, two sets of mechanical adjusting parts which are the same in structure and a set of physical reference datum parts. The invention also provides an alignment device adopting the space adjustment mechanism and a method for aligning two polarization-maintaining fiber collimators by using the set of devices. The space adjustment mechanism for aligning the polarization-maintaining fiber collimators also comprises a linearly polarized light generator, a fiber connection network and an optical parameter measurement unit. The beneficial effects are achieved by adopting the content of the invention: a physical reference datum is provided, so that initialspace position alignment is simple and easy to implement; the number of mechanical movement parts is reduced by adopting a fiber optical path; online measurement is realized on optical power and polarization extinction ratio; the displacement deviation caused by eccentric adjustment is avoided; the optical power fluctuations caused by the rotation movements of the polarization-maintaining fiber collimators are reduced; by the alignment method, the adjustment efficiency is improved, and the dependence on the skill of an operator is reduced; and the shaft running phenomenon when polarization alignment is carried out is avoided by adopting the polarization-maintaining fiber optical path through a method for measuring the polarization extinction ratio.
Description
technical field [0001] The invention belongs to the technical field of optical fiber communication and optical fiber sensing, and in particular relates to a spatial position adjustment mechanism used for alignment of a polarization-maintaining optical fiber collimator, an alignment device including the mechanism, and an alignment device using the alignment device. correct alignment method. Background technique [0002] The polarization-maintaining fiber collimator is the basic component of the passive fiber optic device. The fiber passive device composed of the polarization-maintaining fiber collimator and the micro-optical crystal has a very wide range of applications in fiber optic communication and fiber optic sensing systems. Its function is to transform the light beam incident on the pigtail of the polarization-maintaining fiber collimator into parallel light output through the internal collimator lens, or converge the parallel light to the inside of the pigtail of the ...
Claims
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IPC IPC(8): G02B7/00G02B7/182G02B6/27G01J1/42
Inventor 梁志军王宪东
Owner 天津峻烽科技有限公司