Publication # 423

423.V. Liu, D. A. B. Miller, and S. Fan, "Ultra-compact photonic crystal waveguide spatial mode converter and its connection to the optical diode effect," Opt. Express 20, 28388-28397 (2012)

We design an extremely compact photonic crystal waveguide
spatial mode converter which converts the fundamental even mode to the
higher order odd mode with nearly 100% efficiency. We adapt a previously
developed design and optimization process that allows these types of
devices to be designed in a matter of minutes. We also present an extremely
compact optical diode device and clarify its general properties and its
relation to spatial mode converters. Finally, we connect the results here to a
general theory on the complexity of optical designs.

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