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Experimental Demonstration of Hybrid Lattice Photonic Crystal Directional Couplers as Wavelength Selective Filters

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Abstract

We demonstrate a hybrid lattice terahertz photonic crystal (PhC) directional coupler as a sensitive filter for the miniaturization of functional devices. Finite - deference time - domain (FDTD) simulations confirm the key role of the dispersion properties for the wave propagation and coupling in the PhC couplers. Accordingly, we design and experimentally validate a terahertz directional coupler filter that is ultimately frequency sensitive. To this end, this unique dispersive device can be utilized to design high sensitive and low loss devices such as filters and demultiplexers.

© 2005 Optical Society of America

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