Observation of delay enhancement in an ion-doped crystal

摘要

We report the investigation of the reduction of the group velocity propagation resulting from the steep change of the refractive index by the coherent population oscillation in an erbium ion-doped optical fiber. We study fully the influences of the ion density and the temperature on the fractional and time delay We find hat the fractional delay can be decreased at high or low temperature. Moreover, we conclude that the temperature can be used as a control parameter to reduce distortion. (c) 2008 Optical Society of America.