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High-power thermally guiding index-antiguiding-core fibers |
Optics Letters, Vol. 38, Issue 4, pp. 510-512 (2013)
http://dx.doi.org/10.1364/OL.38.000510
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Abstract
We investigate high-power operation of a very-large-mode-area (VLMA) fiber concept based on an index-antiguiding, thermally guiding core in which an ytterbium-doped region is completely surrounded by silica with a slightly higher refractive index. Experimentally, regimes of antiguidance, single-mode operation, and mode instabilities predominantly with radially symmetric higher-order modes are observed. Fundamental limitations for conventional VLMA step-index fibers are discussed.
© 2013 Optical Society of America
OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.6810) Lasers and laser optics : Thermal effects
(350.6830) Other areas of optics : Thermal lensing
(060.3510) Fiber optics and optical communications : Lasers, fiber
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: November 26, 2012
Revised Manuscript: January 9, 2013
Manuscript Accepted: January 9, 2013
Published: February 12, 2013
Citation
Florian Jansen, Fabian Stutzki, Hans-Jürgen Otto, Cesar Jauregui, Jens Limpert, and Andreas Tünnermann, "High-power thermally guiding index-antiguiding-core fibers," Opt. Lett. 38, 510-512 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-4-510
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