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International Journal of Optics
Volume 2012 (2012), Article ID 130517, 17 pages
Research Article

Light Combining for Interferometric Switching

1Institut des Nanotechnologies de Lyon, Université de Lyon, INL-UMR5270, CNRS, INSA de Lyon, 69621 Villeurbanne, France
2Nanoscience Laboratory, Department of Physics, University of Trento, Via Sommarive 14, 38121 Trento, Italy

Received 4 February 2012; Accepted 11 April 2012

Academic Editor: Francesco Prudenzano

Copyright © 2012 Marco Masi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Interferometric switching as a routing method in sequence of coupled optical microresonators is explored. Mach-Zhender interferometry is extended to systems of side-coupled integrated sequences of resonators (SCISSORs) and coupled resonators optical waveguides (CROWs). We generalized Coupled Mode Theory (CMT) to a system of three coupled waveguides. The two bus interferometric switching functions of SCISSOR and CROW resonant structures are investigated. A novel switching device based on three input phase modulation ports is presented. This device displays a wide range of switching behaviors which might lead to new interesting applications.