Optical Sensors and Microsystems Using Liquid Crystals

Sirleto, L.; Abbate, Giancarlo; Righini, G. C.; Santamato, Enrico

doi:10.1007/0-306-47099-3_6

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…Liquid crystals have effective electro-optic coefficients orders of magnitude larger than their solid state counterparts, due to their anisotropy and large electric-field induced molecular reorientation. These properties, combined with their ability to be micromanipulated, their low cost and the possibility for integration with silicon circuit technology make LCs particularly attractive in designing photonic devices, whenever compactness, complexity, and low cost are more important requirements than switching speed [11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Tunable T-Shaped Waveguide in Two Dimensional Photonic Crystals Based on Liquid Crystals

Dardano

Sirleto

Mocella

et al. 2006

Molecular Crystals and Liquid Crystals

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In the last years, in order to achieve active tuning of photonic crystals devices, the possibility to use liquid crystal inside photonic crystals has been explored.On this line of argument, in this paper, we numerically investigate a tunable T-shaped waveguide diplexer, based on a two-dimensional square lattice photonic crystal composed of silicon rods in a liquid crystals. We prove that complete splitting of the entire input wavelengths range in two sub-ranges symmetrical with respect to the middle (switching) wavelength, and propagating in right and left arms respectively, can be achieved. Moreover, changing the refractive index of liquid crystals by electro-optical effect, a tuning of switching wavelength of about 60 nm can be obtained.

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