Abstract
Long-haul high-bit rate coherent optical communication over standard monomode fiber can be significantly impaired by fiber chromatic dispersion, inevitably limiting the information capacity achievable with single carrier. However, since coherent detection provides for direct mapping of the optical fiber chromatic dispersion into the electrical domain correction using microwave structures is possible: appropriate selection of the local oscillator frequency enables the dispersion (group delay) of the intermediate frequency equalizer structure to be of the opposite polarity to the fiber dispersion when mapped into the intermediate frequency.
© 1992 Optical Society of America
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