The effect of a mutual off-centered launch of a SM fiber into a few modes fiber on the output beam quality

Yariv Shamir, Yoav Sintov, Mark Shtaif

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Beam quality analysis of mutual off-centered fibers is presented. The relevant scenario is where a single mode input fiber is injecting optical radiation into a few-mode output fiber. Both are step-index, single clad fibers. Assuming the source's coherence time is short enough, the major finding is that the output beam quality is the highest when the injecting fiber is at some offset with respect to the center of the receiving core. A Theoretical analysis and an experiment are in good agreement with each other. These results may have practical consequences in beam-coupling schemes and in applications emphasizing the importance of beam quality.

Original languageEnglish
Title of host publicationFiber Lasers VII
Subtitle of host publicationTechnology, Systems, and Applications
DOIs
StatePublished - 2010
EventFiber Lasers VII: Technology, Systems, and Applications - San Francisco, CA, United States
Duration: 25 Jan 201028 Jan 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7580
ISSN (Print)0277-786X

Conference

ConferenceFiber Lasers VII: Technology, Systems, and Applications
Country/TerritoryUnited States
CitySan Francisco, CA
Period25/01/1028/01/10

Keywords

  • Beam parameter product
  • Fiber modes
  • M
  • Optical fibers
  • Overlap integral

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