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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 9 — May. 5, 2014
  • pp: 11267–11278

Impact of gain saturation on the mode instability threshold in high-power fiber amplifiers

Kristian Rymann Hansen and Jesper Lægsgaard  »View Author Affiliations


Optics Express, Vol. 22, Issue 9, pp. 11267-11278 (2014)
http://dx.doi.org/10.1364/OE.22.011267


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Abstract

We present a coupled-mode model of transverse mode instability in high-power fiber amplifiers, which takes the effect of gain saturation into account. The model provides simple semi-analytical formulas for the mode instability threshold, which are valid also for highly saturated amplifiers. The model is compared to recently published detailed numerical simulations of mode instability, and we find reasonably good agreement with our simplified coupled-mode model.

© 2014 OSA

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(140.6810) Lasers and laser optics : Thermal effects
(190.3100) Nonlinear optics : Instabilities and chaos
(190.4370) Nonlinear optics : Nonlinear optics, fibers

ToC Category:
Fiber Optics

History
Original Manuscript: January 24, 2014
Revised Manuscript: April 4, 2014
Manuscript Accepted: April 25, 2014
Published: May 2, 2014

Citation
Kristian Rymann Hansen and Jesper Lægsgaard, "Impact of gain saturation on the mode instability threshold in high-power fiber amplifiers," Opt. Express 22, 11267-11278 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-9-11267


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References

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