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2013 (Vol. 6, Issue: 03)
Article Information:

Evaluation of Mode Field Diameter of Step-Index Fibers and Comparison Analysis

Bo Yang, Jian Duan, Zheng Xie and Hongfeng Xiao
Corresponding Author:  Bo Yang 

Key words:  Beam propagation method, mode field diameter, numerical aperture, single mode fiber , , ,
Vol. 6 , (03): 382-386
Submitted Accepted Published
July 12, 2012 September 08, 2012 June 15, 2013
Abstract:

After detailed reviews of the exact mode field distribution of Single Mode Step-Index (SMSI) fibers and relevant definitions of Mode Field Diameter (MFD) and a careful comparison between them, a new approximate equation to calculate the mode field diameter is presented in this study. This equation is more accurate and flexible to determine MFD of Peterman I than Gaussian spot size with that of 1/e and Marcuse empirical equation, and what’s more, have a analytic solution of its inverse problem that can be used to directly calculate normalized frequency, Numerical Aperture (NA) and the cut-off wavelength. In order to evaluate the new equation, a beam propagation method that simulates the distribution of fundamental mode field is adopted. Numerical simulation results indicate that the new equation is in good agreement with the theoretical predictions. The new approximation function of MFD is a high level functional equation for the theoretical study of the characteristics of the single-mode fibers and construction of new special fibers.
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  Cite this Reference:
Bo Yang, Jian Duan, Zheng Xie and Hongfeng Xiao, 2013. Evaluation of Mode Field Diameter of Step-Index Fibers and Comparison Analysis.  Research Journal of Applied Sciences, Engineering and Technology, 6(03): 382-386.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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