Numerical analysis of eigenmodes and splice losses of thermally diffused expanded core fibers

Yasuo Ohtera, Osamu Hanaizumi, Shojiro Kawakami

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

Field distributions and far-field patterns (FFP's) of the eigenmodes of thermally diffused expanded core (TEC) fibers are clarified by numerical analysis. The spot size of the TEC fiber is estimated by using the FFP that can be measured more easily than the near-field pattern (NFP). Splice losses of two TEC fibers are analyzed numerically considering a single or composite effect of gap, offset, and tilt. The results are useful for estimating isolations of fiber-integrated optical isolators and insertion losses of other fiber-integrated type optical devices. Splice losses considering multiple reflection between two endfaces of the TEC fibers with gaps are also analyzed numerically. This is useful for the design of fiber-integrated tunable wavelength filters.

Original languageEnglish
Pages (from-to)2675-2682
Number of pages8
JournalJournal of Lightwave Technology
Volume17
Issue number12
DOIs
Publication statusPublished - 1999 Dec 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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