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

doi:10.1117/12.841229

17 February 2010 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

Author Affiliations +

Proceedings Volume 7580, Fiber Lasers VII: Technology, Systems, and Applications; 758027 (2010) https://doi.org/10.1117/12.841229
Event: SPIE LASE, 2010, San Francisco, California, United States

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.

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Yariv Shamir, Yoav Sintov, and Mark Shtaif "The effect of a mutual off-centered launch of a SM fiber into a few modes fiber on the output beam quality", Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 758027 (17 February 2010); https://doi.org/10.1117/12.841229

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