Open AccessInvestigation of bandwidth in multimode graded-index plastic optical fibers
Author(s) -
Ana Simović,
Branko Drljača,
Svetislav Savović,
Alexandar Djordjevich,
Rui Min
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.433481
Subject(s) - multi mode optical fiber , materials science , optics , bandwidth (computing) , optical fiber , offset (computer science) , graded index fiber , plastic optical fiber , modal dispersion , mode volume , fiber optic sensor , telecommunications , physics , computer science , programming language
A new method is proposed for investigating the bandwidth in multimode graded-index plastic optical fibers (GI POFs). By numerically solving the time-dependent power flow equation, bandwidth is reported for a varied launch conditions (radial offsets) of multimode GI POF. Our theoretical results are supported by the experimental results which show that bandwidth decreases with increasing radial offset. This decrease is more pronounced at short fiber lengths. At fiber length close to the coupling length Lc at which an equilibrium mode distribution (EMD) is achieved, this decrease becomes slower, indicating that mode coupling improves bandwidth at larger fiber lengths. With further increase of fiber length, bandwidth becomes nearly independent of the radial offset, indicating that a steady-state distribution (SSD) is achieved. Such a fiber characterization can be applied to optimize fiber performance in POF links.