Journal
OPTICS EXPRESS
Volume 18, Issue 5, Pages 4411-4416Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.004411
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- Deutsche Forschungsgemeinschaft
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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. (C) 2010 Optical Society of America
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