Error analysis and optimization algorithm of focal shift on mode decomposition for few-mode fiber beam

doi:10.1007/s11801-021-0147-x

CIOMP OpenIR

	Error analysis and optimization algorithm of focal shift on mode decomposition for few-mode fiber beam
	Y. Zhang; L. Liu; T. Wang; J. Guo and Y. Han
	2021
Source Publication	Optoelectronics Letters
ISSN	16731905
Volume	17 Issue:7 Pages:418-421
Abstract	Modal decomposition technology is an effective method to study the mode characteristics of laser beam in few-mode fibers. However, certain types of eigenmodes in the fiber can cause focal shift and affect the accuracy of modal decomposition. This article focuses on the influence of the focal shift of Laguerre-Gaussian mode and Linear Polarization mode on modal decomposition, and the research is based on correlation filter and the optimization algorithm of focal shift. The two-step ABCD algorithm is used to simulate and analyze the focal shift phenomenon of the two kinds of eigenmodes and the error influence of focal shift on the mode decomposition; Meanwhile, an iterative algorithm based on Fresnel diffraction is proposed to numerically calculate the light field distribution in focal plane to avoid the influence of focal shift errors. The focal shift analysis and its optimization algorithm make the modal decomposition technology be applicable to engineering applications. 2021, Tianjin University of Technology.
DOI	10.1007/s11801-021-0147-x
URL	查看原文
Indexed By	EI
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Document Type	期刊论文
Identifier	http://ir.ciomp.ac.cn/handle/181722/65228
Collection	中国科学院长春光学精密机械与物理研究所
Recommended Citation GB/T 7714	Y. Zhang,L. Liu,T. Wang,et al. Error analysis and optimization algorithm of focal shift on mode decomposition for few-mode fiber beam[J]. Optoelectronics Letters,2021,17(7):418-421.
APA	Y. Zhang,L. Liu,T. Wang,&J. Guo and Y. Han.(2021).Error analysis and optimization algorithm of focal shift on mode decomposition for few-mode fiber beam.Optoelectronics Letters,17(7),418-421.
MLA	Y. Zhang,et al."Error analysis and optimization algorithm of focal shift on mode decomposition for few-mode fiber beam".Optoelectronics Letters 17.7(2021):418-421.

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中国科学院长春光学精密机械与物理研究所