Abstract
mode converters based on UV-written intracore gratings have been
fabricated for chromatic-dispersion compensation. The mode converters operate
in transmission at wavelengths near 1550 nm with spectral bandwidths
of 14–25 nm and coupling
efficiencies of as much as 90%. A large negative dispersion of is obtained for a compensator consisting of the mode converter
and a 1490-m-long few-mode fiber. The compensator shows negative dispersion
over a wavelength region of 5 nm. Its figure of merit is estimated
to be .
© 1998 Optical Society of America
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