Abstract

We suggest and analyze a new compact nonreciprocal optical component based on a magneto-optical (MO) resonator. This component fulfills simultaneously two functions, namely, equal division of the input signal between three output ports and isolation of the input port from output ones. Using group theory, we analyze the scattering matrix of this symmetrical component. Our numerical results for one of the possible schemes of the divider based on 2D photonic crystal with MO material demonstrate that, at the central frequency, the division of the signal between the three output ports is about 6.4dB. The variation of the division levels in the output ports in this band is (6.4±0.4)dB. For two of the output ports, the calculated bandwidth for the level 20dB of the isolation is around 219 GHz at the wavelength 1.55 μm. For the third output port, the isolation at the central frequency is about 6dB.

© 2013 Optical Society of America

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