Photonic crystal slab line defect waveguides with slightly small innermost holes are theoretically expected to show light transmission with low-group-velocity and low-dispersion (LVLD) characteristics owing to a linear and almost flat photonic band. In this study, the LVLD characteristics of such waveguides were experimentally confirmed by using modulation phase shift measurement and transmission of ultrashort optical pulses. These results will be applicable to buffering and nonlinearity enhancement of optical signals.
© 2007 Optical Society of America
Original Manuscript: July 17, 2007
Revised Manuscript: August 29, 2007
Manuscript Accepted: September 6, 2007
Published: October 8, 2007
Shousaku Kubo, Daisuke Mori, and Toshihiko Baba, "Low-group-velocity and low-dispersion slow light in photonic crystal waveguides," Opt. Lett. 32, 2981-2983 (2007)