Acta Photonica Sinica, Volume. 51, Issue 4, 0406002(2022)
Real-time and High Accuracy Alignment Method of Polarization- maintaining Fiber Based on Back Projection Light through Matching Liquid
The traditional polarization-maintaining fiber alignment method is divided into longitudinal and lateral observation methods. However, both of them have severe defects. For example, the longitudinal observation method limits the application scenarios due to the destruction of the polarization fiber in the detection section. In contrast, the widely used lateral observation method requires high standards for experimental equipment and complex manual operations and alignment algorithms. Regarding the panda polarization maintaining fiber as the research object, instead of the traditional polarization-maintaining fiber alignment thinking of applying a high standard light source and adjusting the imaging surface. Based on applying the matching liquid mixed with glycerin and deionized water, the ideal refraction environment can be created due to the reduced effects of multiple spherical aberrations. Hence, high accuracy visualization can be achieved by projection from the incoherent parallel light sources. Then, applying the rotating motor with a fiber clamp setup and imaging system to form an experimental device, a long-distance section of the polarization-maintaining fiber can be aligned. Additionally, the LabVIEW platform can demonstrate the results of direct observation and real-time extraction of light intensity distribution information, which contains angle information of the polarization axis from the polarization-maintaining fiber. This information can also be called the characteristic value of the high accuracy alignment method, i.e., the three segment diffraction fringe spaces
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Meng LI, Xiuquan MA, Chunquan HONG, Chang HU, Tianyu XU. Real-time and High Accuracy Alignment Method of Polarization- maintaining Fiber Based on Back Projection Light through Matching Liquid[J]. Acta Photonica Sinica, 2022, 51(4): 0406002
Category: Fiber Optics and Optical Communications
Received: Sep. 10, 2021
Accepted: Oct. 19, 2021
Published Online: May. 18, 2022
The Author Email: MA Xiuquan (xma@hust.edu.cn)