Funnel-based biomimetic volume optics

E. DelRe*, A. Pierangelo, J. Parravicini, S. Gentilini, A. J. Agranat

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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.

Original languageAmerican English
Pages (from-to)16631-16638
Number of pages8
JournalOptics Express
Issue number15
StatePublished - 16 Jul 2012


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