Abstract
A high-resolution technique for dispersion measurement in waveguides with arbitrary chromatic dispersion is reported. The technique is based on localization of four-photon mixing achieved by abrupt increase in signal-probe interaction along the measured waveguide. Arbitrary increase in optical power is achieved by counter colliding power transfer between signal and counterpropagating pump wave. The new technique was used to demonstrate meter-scale dispersion retrieval from highly nonlinear fiber for the first time. The measurement sensitivity exceeds that of the existing methods by two orders of magnitude.
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