Group velocity dispersion is calculated in weakly guiding slab guides having depressed index layer(s) next to the guiding region. Negative guide dispersion is easily obtained in the single mode regime. The amount of negative dispersion increases with index depth and physical width of the depressed index region.
© 1990 Optical Society of America
Original Manuscript: August 31, 1989
Published: April 20, 1990
Andrew Dienes, Youhang Peng, and André Knoesen, "Group velocity dispersion in depressed index type planar waveguides," Appl. Opt. 29, 1722-1724 (1990)