AUTHOR=Simović Ana , Savović Svetislav , Wang Zhuo , Drljača Branko , Kovačević Milan S. , Kuzmanović Ljubica , Djordjevich Alexandar , Aidinis Konstantinos , Chen Chen 

TITLE=Wavelength dependent transmission in multimode graded-index microstructured polymer optical fibers

JOURNAL=Frontiers in Physics

VOLUME=12

YEAR=2024

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2024.1340505

DOI=10.3389/fphy.2024.1340505

ISSN=2296-424X

ABSTRACT=<p>Up to now, there have been no commercial simulation tools accessible for researching the transmission properties of multimode microstructured optical fibers (MOFs). In order to avoid this problem, this study uses the time-independent power flow equation (TI PFE) numerical solution to examine the wavelength dependency of the equilibrium mode distribution (EMD) and steady state distribution (SSD) in multimode graded-index microstructured polymer optical fibers (GI mPOF) with a solid core. We showed that the lengths <italic>z</italic><sub><italic>s</italic></sub> at which an SSD is obtained in GI mPOF and the coupling length <italic>L</italic><sub><italic>c</italic></sub> necessary to create an EMD are shorter at λ = 568 nm than they are found to be at λ = 633 nm. The lengths <italic>L</italic><sub><italic>c</italic></sub> and <italic>z</italic><sub><italic>s</italic></sub> stay constant when the wavelength decreases further from λ = 568 to 522 and then to 476 nm. As a result, it is anticipated that a faster bandwidth enhancement in the tested GI mPOF will take place at wavelengths around λ = 568 nm as opposed to λ = 633 nm. Such a bandwidth improvement is not brought about by additional wavelength reduction. The study’s findings can be used in communication and sensory systems that use multimode GI mPOFs at different wavelengths.</p>