Abstract

The propagation of an optical pulse in a fiber depends on the chromatic dispersion of the fiber. Rare-earth dopants, with their associated strong absorption and gain resonances, are expected to modify the linear dispersion as well as enhance the nonlinear index. By using the technique of white-light interferometry, the dispersion of an optical fiber can be measured with a spectral resolution of 5 nm and a temporal resolution of 13 fs.

© 1990 Optical Society of America