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 that 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.
© 2008 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: August 24, 2007
Revised Manuscript: December 11, 2007
Manuscript Accepted: January 20, 2008
Published: April 4, 2008
Wei Qiu, Yundong Zhang, Jianbo Ye, Nan Wang, Jinfang Wang, and Ping Yuan, "Observation of delay enhancement in an ion-doped crystal," Appl. Opt. 47, 1781-1784 (2008)