Optical fiber coupling adjusting device and adjusting method thereof
An adjustment device and optical fiber coupling technology, applied in the field of optical fiber, can solve problems such as uneven power density, laborious and time-consuming debugging, and reduce coupling efficiency, so as to achieve the effect of fully automatic operation
Pending Publication Date: 2020-06-26
JIHUA LAB
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Problems solved by technology
If the focus of the laser is not focused on the fiber connector, the coupling efficiency will be reduced and the output light intensity will be reduced; if the focus of the laser is converged on the fiber connector, but it is not in the center of the fiber connector, it will be projected to the light screen through the fiber The spot on the surface is caused by the ring shape, the power density is not uniform, and the light quality is reduced.
However, traditional three-degree-of-freedom optical fiber coupling adjustment devices often use manual adjustment, which is laborious and time-consuming to debug, especially when it is very difficult to couple spatial light into a single-mode fiber with a core diameter of only a few microns, and it is laborious and time-consuming to debug.
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[0030] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention.
[0031] In the following description, for the purposes of explaining the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of these specific details. In other instances, well-known devices, structures and techniques associated with the present application may not have been shown or described in detail in order to avoid unnecessarily...
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The invention discloses an optical fiber coupling adjusting device and an adjusting method thereof. The optical fiber coupling adjusting device comprises a first fixing piece, a second fixing piece and a plurality of piezoelectric ceramic stacks. A first mounting hole for mounting an optical fiber coupler is formed in the middle of the first fixing piece; a second mounting hole for mounting an optical fiber is formed in the middle of the second fixing piece; and the plurality of piezoelectric ceramics are stacked between the first fixing piece and the second fixing piece to drive the first fixing piece and further drive the optical fiber coupler mounted in the first mounting hole to perform three-degree-of-freedom movement. The piezoelectric ceramic stack is creatively applied to the optical fiber coupling adjusting device, so that problems that a traditional optical fiber coupling adjustment device is insufficient in adjustment precision, prone to overshoot and the like are solved.
Description
technical field [0001] The invention relates to the field of optical fibers, in particular to an optical fiber coupling adjustment device and an adjustment method thereof. Background technique [0002] Precision optical instruments are widely used in many fields such as precision test and measurement, equipment detection and analysis, and their working light sources are often provided by lasers through optical fibers. [0003] Fiber couplers are an important part of high power lasers. Its function is to change the beam diameter and to couple the laser output beam into the optical fiber with the smallest optical power loss and the smallest possible beam numerical aperture. [0004] The fiber coupler is mainly composed of a coupling mirror and a fiber optic connector. The laser is focused on the fiber connector through the focusing effect of the coupling mirror, and then output through the fiber. When the focal point of laser convergence hits the center of the optical fiber ...
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IPC IPC(8): G02B6/42
CPCG02B6/4236G02B6/424G02B6/4296
Inventor 杨晓峰郝凌凌张志平
Owner JIHUA LAB