Radial distribution of pump and signal intensities in step index EDFA for LP11 mode in Kerr nonlinear condition

Biplab Kumar Ray; Angshuman Majumdar; Sankar Gangopadhyay

doi:10.1515/joc-2022-0109

Article

Radial distribution of pump and signal intensities in step index EDFA for LP₁₁ mode in Kerr nonlinear condition

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Published/Copyright: October 4, 2022

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From the journal Journal of Optical Communications Volume 46 Issue 1

Abstract

In an all-optical communication system, an erbium-doped fiber amplifier performs a very significant role. The effectiveness of the operation of this kind of amplifier depends on different parameters of the amplifier. Variation of the intensities of pump and signal with distance along the radius of the fiber from the core axis is one such significant parameter. In our present case, we have studied the distribution of the intensities of both the pump and signal along the radius of the fiber in an erbium-doped dual-mode fiber amplifier for the LP₁₁ mode. In the present case, some step-index fibers of different normalized frequencies have opted. Our study is an application of the Chebyshev technique expressing the LP₁₁ modal field in the form of a power series. A little computation is required for the prediction of the concerned results by this technique. Results obtained from this study show an excellent match with those found by the rigorous finite element method establishing its accuracy. This study using such a user-friendly and accurate technique will be helpful to the optical engineers involved in this domain.

Keywords: Chebyshev technique; erbium-doped fiber amplifier; intensity of LP11 mode; Kerr nonlinear condition; step-index fiber

Corresponding author: Sankar Gangopadhyay, Department of Electronics and Communication Engineering, Brainware University, Barasat, Kolkata 700125, West Bengal, India, E-mail: sankar.gangopadhyay@yahoo.co.in

Acknowledgments

Authors are grateful to the honourable reviewers for the constructive suggestions.

Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-06-09

Accepted: 2022-09-06

Published Online: 2022-10-04

Published in Print: 2025-01-29

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Articles in the same Issue

https://doi.org/10.1515/joc-2022-0109

Keywords for this article

Chebyshev technique; erbium-doped fiber amplifier; intensity of LP11 mode; Kerr nonlinear condition; step-index fiber