Abstract

We study cascaded microring resonator (CMRR) configurations as general nonlinear phase-shifting elements that exhibit enhanced nonlinear sensitivity and flattened transmission characteristics. We show that even when the material itself has large two-photon absorption, CMRR devices with five rings facilitate a factor-of-10 enhancement of the optical nonlinearity when compared with a channel waveguide having the same group delay. In addition, high throughput in intensity can be maintained up to a 3π phase shift.

© 2003 Optical Society of America

Beyond the absorption-limited nonlinear phase shift with microring resonators

Steve Blair, John E. Heebner, and Robert W. Boyd
Opt. Lett. 27(5) 357-359 (2002)

Engineering the nonlinear phase shift

Yan Chen, Geeta Pasrija, Behrouz Farhang-Boroujeny, and Steve Blair
Opt. Lett. 28(20) 1945-1947 (2003)

Enhanced linear and nonlinear optical phase response of AlGaAs microring resonators

John E. Heebner, Nick N. Lepeshkin, Aaron Schweinsberg, G. W. Wicks, Robert W. Boyd, Rohit Grover, and P.-T. Ho
Opt. Lett. 29(7) 769-771 (2004)

Engineering the nonlinear phase shift with multistage autoregressive moving-average optical filters

Yan Chen, Geeta Pasrija, Behrouz Farhang-Boroujeny, and Steve Blair
Appl. Opt. 44(13) 2564-2574 (2005)

Self-focusing of narrow one-dimensional beams in photonic microcavity arrays

Steve Blair
J. Opt. Soc. Am. B 20(7) 1520-1526 (2003)