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

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 c...

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Bibliographic Details
Published in:Applied sciences 2019-08, Vol.9 (16), p.3296
Main Authors: Liu, Yongkai, Wang, Jianli, Ma, Lie, Gao, Shijie, Guo, Chenzi, Yao, Kainan, Sheng, Lei
Format: Article
Language:English
Subjects:
Aberration
Adaptive optics
Approximation
Atmospheric lasers
Atmospheric turbulence
coupling efficiency
Efficiency
Field theory
Free-space optical communication
gas sensing
Gas sensors
laser communication
Lasers
lidar
Light
Mathematical models
Methods
Optical fibers
Polynomials
Signal processing
single-mode fiber
spatial frequency
Systems design
Theoretical analysis
Zernike polynomials
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Summary: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.
ISSN:2076-3417
2076-3417
DOI:10.3390/app9163296