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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 14 — May. 10, 2011
  • pp: 2001–2007

Characterization and optimization of Yb-doped photonic-crystal fiber rod amplifiers using spatially resolved spectral interferometry

Jake Bromage, John M. Fini, Christophe Dorrer, and Jonathan D. Zuegel  »View Author Affiliations


Applied Optics, Vol. 50, Issue 14, pp. 2001-2007 (2011)
http://dx.doi.org/10.1364/AO.50.002001


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Abstract

Spatially resolved spectral interferometry is used to measure the mode content of a Yb-doped photonic-crystal fiber rod amplifier with a 2300 μm 2 mode area. The technique, known as S 2 imaging, was adapted for the short fiber amplifier at full power and revealed a small amount of a copolarized LP 11 mode. Simulations illustrate the potential for weak mode suppression in this fiber and agree qualitatively with the measurements of S 2 and M 2 . Higher-order-mode content depends on the alignment of the input signal at injection and ranged from 18 dB for optimized alignment to 13 dB when the injection alignment was offset along the LP 11 axis by 30% of the 55 μm mode-field diameter.

© 2011 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 23, 2010
Manuscript Accepted: February 14, 2011
Published: May 4, 2011

Citation
Jake Bromage, John M. Fini, Christophe Dorrer, and Jonathan D. Zuegel, "Characterization and optimization of Yb-doped photonic-crystal fiber rod amplifiers using spatially resolved spectral interferometry," Appl. Opt. 50, 2001-2007 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-14-2001


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References

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