We analyze fast- and slow-light transmission in a zigzag microring resonator chain. In the superluminal case, a new light-transmission effect is found whereby the input optical pulse is reproduced in an almost-simultaneous manner at the various system outputs. When the input carrier is tuned to a different frequency, the system permits to slow down the propagating optical signal. Between these two extreme cases, the relative delay can be tuned within a broad range. We propose, and analyze numerically, a laser-array configuration for the stable operation of active devices.
© 2009 Optical Society of America
Original Manuscript: November 10, 2008
Revised Manuscript: December 30, 2008
Manuscript Accepted: January 13, 2009
Published: February 24, 2009
P. Chamorro-Posada and F. J. Fraile-Pelaez, "Fast and slow light in zigzag microring resonator chains," Opt. Lett. 34, 626-628 (2009)