Tuning of silicon-on-insulator ring resonators with liquid crystal cladding using the longitudinal field component
Journal article published in 2009 by
Wout De Cort,
Jeroen Beeckman,
Richard James,
F. Anibal Fernández,
F. Anibal Fernandez,
Roel Baets,
Kristiaan Neyts 
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Abstract
We show tuning of the resonance wavelength of silicon-on-insulator microring resonators with liquid crystal cladding. The electro-optic effect of the liquid crystal causes a decrease in effective refractive index for the TE-polarized light in the waveguides. Tuning of the liquid crystal birefringence affects primarily the longitudinal component of the electric field. We achieve a tuning range of 0.6 nm. Through simulation and experiment we perform a thorough study of this phenomenon.