New method for the investigation of mode coupling in graded-index polymer photonic crystal fibers using the Langevin stochastic differential equation

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Original languageEnglish
Article number1479206
Journal / PublicationFrontiers in Physics
Volume12
Online published9 Sept 2024
Publication statusPublished - 2024

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  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85204809545&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(fdfd7347-4b5b-447d-9e4e-e87ccbaa6d5e).html

Abstract

The mode coupling in a graded-index polymer photonic crystal fiber (GI PPCF) with a solid core has been investigated using the Langevin equation. Based on the computer-simulated Langevin force, the Langevin equation is numerically integrated. The numerical solutions of the Langevin equation align with those of the time-independent power flow equation (TI PFE). We showed that by solving the Langevin equation, which is a stochastic differential equation, one can successfully treat a mode coupling in GI PPCFs, which is an intrinsically stochastic process. We demonstrated that, in terms of effectiveness, the Langevin equation is preferable compared to the TI PFE. The GI PPCF achieves the equilibrium mode distribution (EMD) at a coupling length that is even shorter than the conventional GI plastic optical fiber (POF). The application of multimode GI PCFs in communications and optical fiber sensor systems will benefit from these findings. © 2024 Savović, Djordjevich, Aidinis, Chen and Min.

Research Area(s)

  • graded-index optical fiber, Langevin equation, optical power flow, photonic crystal fiber, plastic optical fiber

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100
stochastic processe... INIS
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investigations INIS
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crystals INIS
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fibers INIS
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coupling INIS
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polymers INIS
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differential equati... INIS
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langevin equation INIS
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Operators (Mathemat... Physics
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Photonic Crystal Fi... Physics
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[ RIS ] [ BibTeX ]
New method for the investigation of mode coupling in graded-index polymer photonic crystal fibers using the Langevin stochastic differential equation. / Savović, Svetislav; Djordjevich, Alexandar; Aidinis, Konstantinos et al.
In: Frontiers in Physics, Vol. 12, 1479206, 2024.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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