Journal
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
Volume 8, Issue 7, Pages S554-S560Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/8/7/S40
Keywords
photonic crystal; optical waveguide; silicon
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We investigate the tunability of a T-shaped waveguiding diplexer, based on a two-dimensional square lattice photonic crystal ( PhC) composed of silicon rods in air and in liquid crystals ( LCs), respectively. For both devices we prove that a complete splitting of the entire input wavelength range into right and left arms respectively can be achieved. Moreover, a tuning of the switching wavelength can be obtained by changing the refractive index of silicon by the thermo-optic effect for PhCs in air, and the refractive index of liquid crystals by the electro-optic effect for PhCs in LCs.
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