Photons flow in liquid circuits

Year: 2007

Authors: Intonti F., Vignolini S., Colocci M., Wiersma D.S.

Autors Affiliation: Univ Florence, INFM, Dipartimento Fis, LENS, I-50019 Sesto Fiorentino, Italy

Abstract: A photonic circuit can be obtained by filling the single pores of a 2-D photonic crystal with liquids such that the refractive index of the filling material is sufficiently close to that of the surrounding matrix. The infiltrated liquid are removed by dipping the photonic crystal in an ultrasonic bath, for the formation of rewritable circuits and reconfigurable integrated photonic-circuit chips. The photons created by optically pumping the colloidal quantum dots are guided through the sample along a waveguide, obtained by infiltrating adjacent pores in a linear geometry. The reflection images of a photonic sample surface offer a picture of the 2-D photonic structure and the pore positions, while the fluorescence images reveal spatial distribution of the infiltrated materials.

Journal/Review: LASER FOCUS WORLD

Volume: 43 (8)      Pages from: 69  to: 69

KeyWords: Flow of fluids; Geometry; Photons; Refractive index; Semiconductor quantum dots; Ultrasonics, Filling materials; Liquid circuits; Photonic circuit, Photonic crystals

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