Abstract
The chromatic dispersion of an optical fiber is measured using a time-of-flight technique, based on temporally
and spectrally resolving a dispersed broadband pulse, on which a spectral fringe pattern has been imposed using an
etalon. The technique employs broadband supercontinuum radiation, generated by launching picosecond pulses from a
fiber laser into a photonic-crystal fiber. It allows the dispersion of highly dispersive optical fibers and
components to be measured with a high spectral resolution over a wide wavelength region. The technique is
demonstrated by measuring the dispersion of a dispersion-compensating module over its entire 400-nm transmission
band with a subnanometer spectral resolution.
© 2007 IEEE
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