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Nonreciprocal optical Bloch oscillations in garnet/silicon-on-insulator waveguide arrays

Published online by Cambridge University Press:  22 March 2011

Pradeep Kumar and
Miguel Levy
Pradeep Kumar
Affiliation:
Department of Physics, Michigan Technological University, Houghton MI 49931 U.S.A.
Miguel Levy
Affiliation:
Department of Physics, Michigan Technological University, Houghton MI 49931 U.S.A.
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Abstract

We show that nonreciprocal Bloch-like oscillations can emerge in passive optical waveguide arrays with linearly growing effective index in the absence of loss or gain. Spectral asymmetry, a difference in propagation constants and Bloch oscillation periods in opposite propagation directions, are established by imposing different vertical spatial index gradients at the substrate/core, and core/cover interfaces in the presence of transverse magnetization. A model system consisting of an array of transversely magnetized asymmetric garnet/silicon-on-insulator waveguides is presented.

Keywords

magnetoopticSioptoelectronic

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References

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