The finite-difference time-domain (FDTD) and frequency-domain finite-element (FE) methods are used to study chirped pulse propagation in 2D photonic crystal (PhC) waveguides. Chirped pulse FDTD has been implemented, which allows the study of pulse propagation in a direct way. The carrier wavelength of the pulse is swept across the bandwidth of a mini-stop-band (MSB) feature, and pulse compression behavior is observed. Both round-hole and square-hole PhC waveguides are studied, with the latter giving increased pulse compression. A group-delay analysis is then used to understand the compression behavior, and this shows how the fast-light regime that occurs within the MSB plays an important role in the observed pulse compression.
© 2007 Optical Society of America
Original Manuscript: November 27, 2006
Revised Manuscript: February 27, 2007
Manuscript Accepted: March 5, 2007
Published: June 15, 2007
Tun Cao, Martin J. Cryan, Pavel S. Ivanov, Daniel Ho, Bob Ren, Ian J. Craddock, Judy M. Rorison, and Chris J. Railton, "Modeling of chirped pulse propagation through a mini-stop band in a two-dimensional photonic crystal waveguide," J. Opt. Soc. Am. B 24, 1575-1583 (2007)