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Open AccessArticle

The Effect of Spatial Mode Distribution on Coupling Efficiency of Single-Mode Fiber: Theoretical Analysis and Experimental Verification

1
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(16), 3296; https://doi.org/10.3390/app9163296
Received: 1 July 2019 / Revised: 8 August 2019 / Accepted: 8 August 2019 / Published: 11 August 2019
(This article belongs to the Special Issue Light Communication: Latest Advances and Prospects)
In this study, Zernike polynomials and optical fiber field theory are applied to build a mathematical model of coupling efficiency (CE) and spatial mode of aberrations. The theory built in this paper can be used to quickly calculate the CE affected by a single aberration as well as the aberrations caused by atmospheric turbulence. The aberrations are classified based on Zernike polynomials and the effects of aberrations on CE of different types and different spatial frequencies are analyzed. The influence of the effects of AO system residual errors is also analyzed. Adaptive optics (AO) equipment is applied to build a system on which the proposed theory was tested; the experimental results validate the theoretical analysis. View Full-Text
Keywords: free space optical communication; laser communication; lidar; gas sensing; single-mode fiber; coupling efficiency; Zernike polynomials; spatial frequency; adaptive optics; atmospheric turbulence free space optical communication; laser communication; lidar; gas sensing; single-mode fiber; coupling efficiency; Zernike polynomials; spatial frequency; adaptive optics; atmospheric turbulence
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Liu, Y.; Wang, J.; Ma, L.; Gao, S.; Guo, C.; Yao, K.; Sheng, L. The Effect of Spatial Mode Distribution on Coupling Efficiency of Single-Mode Fiber: Theoretical Analysis and Experimental Verification. Appl. Sci. 2019, 9, 3296.

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