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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 25 — Dec. 7, 2009
  • pp: 22666–22672

Gain guiding in large-core Bragg fibers

Xianyu Ao, Tsing-Hua Her, and Lee W. Casperson  »View Author Affiliations

Optics Express, Vol. 17, Issue 25, pp. 22666-22672 (2009)

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We theoretically analyze gain guiding in large-core Bragg fibers, to be used for large-mode-area laser amplifiers with single-transverse-mode operation. The signal is gain-guided in a low-index core, whereas the pump is guided by the photonic bandgap of the Bragg cladding to achieve good confinement. The high-index layers in the Bragg cladding are half-wave thick at the signal wavelength in order to eliminate Bragg reflection, reducing the Bragg fiber effectively to a step-index fiber for gain guiding.


OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4005) Fiber optics and optical communications : Microstructured fibers
(160.5293) Materials : Photonic bandgap materials
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: September 28, 2009
Revised Manuscript: November 14, 2009
Manuscript Accepted: November 15, 2009
Published: November 25, 2009

Xianyu Ao, Tsing-Hua Her, and Lee W. Casperson, "Gain guiding in large-core Bragg fibers," Opt. Express 17, 22666-22672 (2009)

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