Abstract
Recently, 10Gb/s transmission experiments without dispersion compensation have been proposed by utilizing non-zero dispersion shifted fibers (NZDSFs) to realize cost effective networks [1,2]. NZDSFs with low dispersion slope have been developed to expand the effective bandwidth [3-5]. However, it is not clear if proposed NZDSFs have proper dispersion characteristics to maximize dispersion compensation free transmission distance. It is because that lower dispersion and lower dispersion slope are desirable to suppress the degradation by accumulated dispersion, but are not desirable in terms of Four-Wave-Mixing (FWM) crosstalk. To obtain a proper fiber design, the maximum transmission distance dependence on dispersion and dispersion slope should be studied, but this process is very time-consuming with numerical simulations. In this paper, we investigated the proper fiber design with analytical calculations. Validity of the proposed fiber design was confirmed by the successful dispersion compensation-free transmission experiment over 240km with fabricated fibers. Further more, another feature of the fabricated fiber and another application of analytical calculation are also discussed.
© 2005 Optical Society of America
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