Mode-coupling control and new index profile of GI POF for restricted-launch condition in very-short-reach networks

Takaaki Ishigure, Kunihiro Ohdoko, Yorichika Ishiyama, Yasuhiro Koike

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

This paper confirms that numerical aperture (NA) is a key factor in mode coupling [the energy transfer among propagating modes in multimode fibers (MMF)] and that providing a high NA is a viable solution to reduce mode coupling in graded-index plastic optical fibers (GI POFs). Furthermore, the authors propose a new refractive-index-profile design of GI POFs when only small mode groups are launched (restricted-launch condition), which is a combined profile with the index exponents lower and higher than optimum value for the core center and periphery, respectively. The advantage of the new index profile is investigated both experimentally and theoretically. Furthermore, it is verified that the high-bandwidth performance of GI POF with the new index profile under the restricted-launch condition is maintained even when statistical fiber bendings are added to the GI POF and when misalignment is caused at the optical coupling between the light source and the GI POF.

Original languageEnglish
Pages (from-to)4155-4168
Number of pages14
JournalJournal of Lightwave Technology
Volume23
Issue number12
DOIs
Publication statusPublished - 2005 Dec 1

Keywords

  • Graded-index plastic optical fiber (GI POF)
  • Mode coupling
  • Numerical aperture (NA)
  • Restricted-launch condition

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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