Abstract

We suggest and analyze a new nonreciprocal optical device based on two-dimensional photonic crystal and a magneto-optical cavity that simultaneously fulfills two functions: division of the input signal and isolation of the input port from two output ones. At the central frequency, the division of the signal between the output ports is $-3\mathrm{dB}$ and the isolation of the input port from the output ones is about $-25\mathrm{dB}$. For the level $-20\mathrm{dB}$ of this isolation, the calculated bandwidth is around 100 GHz at the wavelength 1.5 μm.

© 2012 Optical Society of America

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