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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 5 — Mar. 1, 2010
  • pp: 4411–4416

Optically induced long-period fiber gratings for guided mode conversion in few-mode fibers

N. Andermahr and C. Fallnich  »View Author Affiliations

Optics Express, Vol. 18, Issue 5, pp. 4411-4416 (2010)

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We propose and demonstrate guided mode conversion by an optically induced long-period fiber grating (OLPG). The beating of two guided modes excited by a nanosecond pulsed laser beam is used to induce a refractive index grating via the Kerr effect. This grating converts a counter-propagating continuous-wave beam from the LP01 to the LP11 mode. Numerical simulations using a beam propagation method show that a full conversion is possible. Experimentally, a mode conversion with an efficiency of about 50% is firstly demonstrated.

© 2010 Optical Society of America

OCIS Codes
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(190.2055) Nonlinear optics : Dynamic gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: December 3, 2009
Revised Manuscript: December 23, 2009
Manuscript Accepted: January 11, 2010
Published: February 18, 2010

N. Andermahr and C. Fallnich, "Optically induced long-period fiber gratings for guided mode conversion in few-mode fibers," Opt. Express 18, 4411-4416 (2010)

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