Abstract

In this Letter, we suggest an on-chip integrated isolator based on an add–drop filter with unidirectional Raman-induced gain (or loss). For the steady state, complete one-way propagation for monochromatic signals is realized in the bus waveguide. For transient transmission, the burr is suppressed. And the power consumption is reduced by enhancing the $Q$ factor of the resonator at the control frequency.

©2012 Optical Society of America

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