Accession Number : ADP007541

Title :   A Negative Contribution to n sub 2 in Silica Fibers,

Corporate Author : AT AND T BELL LABS HOLMDEL NJ

Personal Author(s) : Stolen, R. H. ; Tomlinson, W. J.

Report Date : 22 MAY 1992

Pagination or Media Count : 6

Abstract : The Raman interaction contributes about 18% of the nonlinear refractive index of silica optical fibers. By numerical simulation we previously demonstrated that this Raman contribution to the nonlinear refractive index is substantially reduced when the optical pulse width is less than the molecular resonance period. A surprising result of those simulations was that the Raman contribution to the nonlinear index was actually negative for pulse widths less than 30 fsec. Here we show that the negative contribution can be traced to the time delay inherent in the Raman response.

Descriptors :   *REFRACTIVE INDEX, *GLASS FIBERS, *FIBER OPTICS, DELAY, INDEXES, INTERACTIONS, RESONANCE, RESPONSE, SIMULATION, WIDTH, SYMPOSIA, NONLINEAR OPTICS, LIGHT PULSES.

Subject Categories : Optics
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE