We demonstrate the use of three-dimensional funnel index of refraction patterns analogous to those of retinal Müller 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. © 2012 Optical Society of America.
Funnel-based biomimetic volume optics / DelRe E.; Pierangelo A.; Parravicini J.; Gentilini S.; Agranat A.J.. - In: OPTICS EXPRESS. - ISSN 1094-4087. - ELETTRONICO. - 20:(2012), pp. 16631-16638. [10.1364/OE.20.016631]
Funnel-based biomimetic volume optics
Parravicini J.;
2012
Abstract
We demonstrate the use of three-dimensional funnel index of refraction patterns analogous to those of retinal Müller 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. © 2012 Optical Society of America.
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