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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 8 — Aug. 1, 2008
  • pp: 1322–1327

High-power long-period-grating-assisted erbium-doped fiber amplifier

Galina Nemova and Raman Kashyap  »View Author Affiliations


JOSA B, Vol. 25, Issue 8, pp. 1322-1327 (2008)
http://dx.doi.org/10.1364/JOSAB.25.001322


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Abstract

We present a new theoretical scheme for a high-power Er 3 + -doped fiber amplifier assisted with a long period grating (LPG). This cladding-pumped amplifier is predicted to generate up to 2.25 kW of continuous-wave output power at 1531 nm with a power conversion efficiency of 0.83 . This device consists of an Er 3 + -doped cladding and an undoped core pumped with a high-power laser at a wavelength of 1480 nm . The LPG imprinted in the fiber core transfers a weak input signal propagating in the core mode of a single-mode fiber into a predetermined cladding mode, dramatically increasing the effective mode-area of the signal and the threshold powers for unwanted nonlinear effects such as stimulated Raman and Brillouin scattering. Depending on the choice of the cladding mode used for amplification, a second LPG imprinted at the end of the Er 3 + -doped fiber may be used to transfer the amplified signal into a large core output fiber with high efficiency, providing a high-quality output beam in a fundamental mode.

© 2008 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2410) Fiber optics and optical communications : Fibers, erbium

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: January 25, 2008
Revised Manuscript: April 3, 2008
Manuscript Accepted: May 31, 2008
Published: July 28, 2008

Citation
Galina Nemova and Raman Kashyap, "High-power long-period-grating-assisted erbium-doped fiber amplifier," J. Opt. Soc. Am. B 25, 1322-1327 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-8-1322


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