Abstract
We calculate the chromatic dispersion of rectangular geom- etry waveguides and focus on the conditions for obtaining zero chromatic dispersion at a wavelength of 1.55 mm. We consider single-mode waveguides fabricated from six distinct compositions of silica-based ma- terials whose dispersive characteristics are modeled by use of a Sell- meier relation. Our analysis takes account of the two transverse dimen- sions of the guiding channel and provides for a determination of the dispersion coefficientb9 as a function of the values of both dimensions. The results allow us to compute a spectrum of values of the two trans- verse widths for which the total dispersion is zero. By definition of an effective mode field diameter for a channel waveguide we are able to discuss the end-to-end coupling of such a waveguide to a commercial single-mode fiber. © 1999 Society of Photo-Optical Instrumentation Engineers. (S0091-3286(99)02401-0)
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