We demonstrate the use of three-dimensional funnel index of refraction patterns analogous to those of retinal Muller cells as support for tunable and multi-functional volume optical component miniaturization and integration. Our experiments in paraelectric photorefractive crystals show how a single funnel can act both as a waveguide and a tunable focusing/defocusing micro-lens. Pairing multiple funnel patterns, we are also able to demonstrate ultra-compact tunable beam-splitting, with distinct guided output modes in under 1mm of propagation. (C) 2012 Optical Society of America
Funnel-based biomimetic volume optics / DEL RE, Eugenio; A., Pierangelo; J., Parravicini; S., Gentilini; A. j., Agranat. - In: OPTICS EXPRESS. - ISSN 1094-4087. - ELETTRONICO. - 20:15(2012), pp. 16631-16638. [10.1364/oe.20.016631]
Funnel-based biomimetic volume optics
DEL RE, EUGENIO;
2012
Abstract
We demonstrate the use of three-dimensional funnel index of refraction patterns analogous to those of retinal Muller cells as support for tunable and multi-functional volume optical component miniaturization and integration. Our experiments in paraelectric photorefractive crystals show how a single funnel can act both as a waveguide and a tunable focusing/defocusing micro-lens. Pairing multiple funnel patterns, we are also able to demonstrate ultra-compact tunable beam-splitting, with distinct guided output modes in under 1mm of propagation. (C) 2012 Optical Society of AmericaI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
