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Compact Wavelength-Selective Switch Circuit for Integrated Optical Interconnect

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Abstract

An integrated optical circuit and its transfer function have been derived for on-chip wavelength-selective switching and/or variable power attenuation. The bus waveguide of an all-pass ring resonator has been replaced by a Mach-Zehnder interferometric optical circuit which can be tuned by a couple of phase-shifters. The transfer function of the entire circuit allows a dynamic power throughput from zero-tranmission-state to fully-transparent-state for an induced phase tuning from 0 to π/2. The ring resonator used in the circuit need not be critically coupled.

© 2014 Optical Society of America

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