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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 24 — Aug. 20, 2006
  • pp: 6212–6217

Overcoming the impeding effect of core-cladding interface on the progression of the second-order nonlinearity in thermally poled optical fibers

Honglin An and Simon Fleming  »View Author Affiliations

Applied Optics, Vol. 45, Issue 24, pp. 6212-6217 (2006)

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The spatial distribution of the second-order optical nonlinearity in thermally poled optical fibers was characterized with second-harmonic microscopy. The second-order optical nonlinearity (SON) was found to be distributed in a layer, the progression of which was impeded at the core-cladding interface, which acted as an extra potential barrier to the migrating ions. At higher poling voltages and temperatures, the SON layer could overcome this barrier and extend further into the fiber core. The polarization dependence of the optical nonlinearity within the fiber core was also checked and found to be almost negligible.

© 2006 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(160.6030) Materials : Silica
(190.1900) Nonlinear optics : Diagnostic applications of nonlinear optics
(190.4160) Nonlinear optics : Multiharmonic generation

Original Manuscript: January 23, 2006
Manuscript Accepted: March 17, 2006

Honglin An and Simon Fleming, "Overcoming the impeding effect of core-cladding interface on the progression of the second-order nonlinearity in thermally poled optical fibers," Appl. Opt. 45, 6212-6217 (2006)

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