Low velocity propagation in liquid in-filled photonic crystal waveguides

A low-loss low-velocity photonic crystal (PhC) waveguide having rectangular air holes in-filled with a liquid crystal in Si core is proposed. The possible propagation losses due to inefficient coupling are also investigated for proposed structure. It is found that high transmission is obtained for a broad bandwidth from the output of the finally designed heterogeneous waveguide consisting of a slow liquid crystal infiltrated PhC waveguide surrounded by fast PhC waveguides on both sides.

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