AUTHOR=Savović Svetislav , Djordjevich Alexandar , Drljača Branko , Simović Ana , Min Rui 

TITLE=Calculation of the Coupling Coefficient in Step-Index Multimode Polymer Optical Fibers Based on the Far-Field Measurements

JOURNAL=Frontiers in Physics

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.927907

DOI=10.3389/fphy.2022.927907

ISSN=2296-424X

ABSTRACT=Using the power flow equation (PFE), this article investigates mode coupling in multimode (MM) step-index (SI) polymer optical fiber (POF). This equation's coupling coefficient was initially fine-tuned so that it could appropriately reconstruct previously recorded far-field (FF) power distributions. The equilibrium mode distribution (EMD) and steady-state distribution (SSD) in the SI POF were found to be obtained at lengths of 15 and 41 meters, respectively. These lengths are substantially shorter than their glass optical fiber counterparts. Such characterization of the investigated POF can be used in its employment as a part of the communication or sensory system.