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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 12 — Dec. 1, 2010
  • pp: 2669–2676

Beam quality analysis and optimization in an adiabatic low mode tapered fiber beam combiner

Yariv Shamir, Yoav Sintov, and Mark Shtaif  »View Author Affiliations


JOSA B, Vol. 27, Issue 12, pp. 2669-2676 (2010)
http://dx.doi.org/10.1364/JOSAB.27.002669


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Abstract

We study tapered fiber bundle based beam-combining structures that closely maintain their lowest supermodes in order to optimize the output beam quality. A method for efficiently producing structures with high beam quality is proposed. The method is based on monitoring the output powers of the tapered fiber bundle during fabrication and evaluating the beam properties at the central portion based on symmetry considerations. The method is demonstrated experimentally and supported by theoretical analysis. Several seven-fiber combiner configurations are demonstrated. The obtained beam qualities are close to the theoretical limits, as dictated by the brightness conservation law.

© 2010 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(230.2285) Optical devices : Fiber devices and optical amplifiers
(140.3295) Lasers and laser optics : Laser beam characterization
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 8, 2010
Revised Manuscript: October 11, 2010
Manuscript Accepted: October 20, 2010
Published: November 16, 2010

Citation
Yariv Shamir, Yoav Sintov, and Mark Shtaif, "Beam quality analysis and optimization in an adiabatic low mode tapered fiber beam combiner," J. Opt. Soc. Am. B 27, 2669-2676 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-12-2669

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