Continuum generation from normally dispersive ultrahigh-numerical-aperture fibers deteriorates in relatively short times, limiting its application as a practical optical source for high-resolution optical coherence tomography. We find that reversible light-induced structural modification of fiber optic materials, rather than permanent optical damage, is responsible for this deterioration. By examining how the optical properties of corresponding light-induced waveguides depend on pumping wavelength, we isolate a waveguide that is beneficial for stable continuum generation. The performance deterioration due to the formation of other waveguides can be reversed by overwriting them with this particular waveguide.

Original languageEnglish (US)
Pages (from-to)2037-2039
Number of pages3
JournalOptics Letters
Issue number14
StatePublished - Jul 15 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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