We propose and analyze a differential control scheme for cavity-enhanced optical signal processing devices based on carrier nonlinearities. The scheme relies on two optical cavities to increase the bandwidth beyond the limit given by the slowest carrier relaxation rate of the medium. Practical implementations are envisioned using photonic crystal cavities, and the controls may be electrical or optical in nature.
© 2014 Optical Society of America
Original Manuscript: March 13, 2014
Revised Manuscript: April 18, 2014
Manuscript Accepted: April 23, 2014
Published: May 23, 2014
Mikkel Heuck, Philip Trøst Kristensen, and Jesper Mørk, "Dual-resonances approach to broadband cavity-assisted optical signal processing beyond the carrier relaxation rate," Opt. Lett. 39, 3189-3192 (2014)