Abstract

A multistep-index (MSI) plastic optical fiber (POF) has been intensively studied as an alternative to high-bandwidth graded-index (GI) POFs during the past decade. The propagation modes in MSI POFs are more complicated than those of GI POFs. We obtain all the propagation modes in MSI large-core highly multimode fibers with a core diameter of $500\mu \text{m}$ by the use of a finite-element method and demonstrate that many modes in MSI fibers have anomalous behavior which cannot be observed in power-law profile fibers. Our numerical results elucidate detailed transmission properties of MSI large-core highly multimode fibers, including the effective index, group delay, mode field, root-mean-square pulse width, and bandwidth.

© 2010 Optical Society of America

Finite-element modal analysis of large-core multimode optical fibers

Masashi Eguchi and Suguru Horinouchi
Appl. Opt. 43(10) 2163-2167 (2004)

Numerical analysis of modal dispersion in graded-index plastic optical fibers

Masashi Eguchi
Appl. Opt. 44(26) 5544-5548 (2005)

All propagation modes of large-core multimode optical fibers with an arbitrary core profile

Masashi Eguchi and Suguru Horinouchi
Opt. Lett. 29(10) 1051-1053 (2004)

Bandwidth enhancement of graded index plastic optical fiber by control of 
differential mode attenuation

Takafumi Noda and Yasuhiro Koike
Opt. Express 18(3) 3128-3136 (2010)

Anomaly of mode field in multistep index profile multimode fiber

Masashi Eguchi
Opt. Lett. 34(4) 446-448 (2009)