Comparison of Methods for Calculating Coupling Length in Step Index Optical Fibers |
| S. Savovića, b, A. Djordjevichb, B. Drljačaa and M.S. Kovačevića
a Faculty of Science, R. Domanovica 12, 34000 Kragujevac, Serbia b City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China |
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| A recently reported function for calculation of the coupling length at which the equilibrium mode distribution is achieved in step index plastic optical fibers is compared to a long established calculation method and to experimental findings. The recent function, while simpler to apply as it eliminates the need to numerically solve the power flow equation repeatedly for every case, is also more accurate for high numerical aperture (0.45 to 0.5) plastic optical fibers. |
| DOI: 10.12693/APhysPolA.116.652 PACS numbers: 42.81.-i, 42.81.Qb, 42.81.Uv |