Interferometric microring-resonant 2 x 2 optical switches

Optics Express
Sang-Yeon Cho, Richard Soref

Abstract

We present modeling and simulation results on a new family of waveguided interferometric 2 x 2 optical routing switches actuated by electro-optic or thermo-optic or all-optical control. Two pairs of coupled microring resonators provide two 3dB coupling regions within a compact Mach-Zehnder geometry. An index perturbation (delta)n of 2 x 10(-3) is sufficient to produce 100% 2 x 2 switching. This perturbation can be applied to one arm of the MZI or to the four rings in the device or to an additional ring that is coupled to one arm. We find that push-pull control is effective for switching: for example, when carriers are injected in one region and depleted in a corresponding second region. An optical transfer-matrix technique is employed to determine the electromagnetic response (the 1550-nm switching characteristics) of the three device-types. Microdisks can be employed instead of microrings, if desired.

Citations

Jul 8, 2009·Optics Express·Sang-Yeon Cho, Richard Soref
Jan 9, 2009·Optics Express·Sang-Yeon Cho, Deva K Borah
Apr 16, 2009·Journal of Biophotonics·Nan JokerstTalmage Tyler
Jan 7, 2010·Optics Express·Hugo L R LiraMichal Lipson
Feb 23, 2010·Optics Express·S H TaoD L Kwong
May 22, 2009·Applied Optics·Thomas Yong Long AngMee Koy Chin
Jul 1, 2011·Optics Express·William S FegadolliJosé Edimar Barbosa Oliveira

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