Abstract
In soliton transmission, third-order dispersion of the transmission fibers tends to cause unacceptable variation in the filter strength parameter over the wide wavelength bands required for massive wavelength division multiplexing. We show how to vary the mirror reflectivities of etalon filters with wavelength, such that , in soliton units, nevertheless remains at the optimal value across the entire transmission band, and we show how to achieve the required accurately and reproducibly by making the etalons from gratings written in fiber.
© 1997 Optical Society of America
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