We present a Ray Tracing model of tapered optical fibers (TF), recently proposed for both wide-volume and site-selective optical control of neural activity [1]. Light-delivery properties of TFs are computationally investigated by identifying the emitting region of the taper and the resulting output angles. This is done in two alternative light coupling modes: i) injecting light within the entire acceptance angle of the optical fiber, generating light output from almost the entire taper, and ii) selecting a specific input angle, therefore allowing light delivery from a specific portion of the TF. In both cases a good agreement with previously reported experimental data has been obtained, letting us envision that the proposed approach can be used to study the mode-division demultiplexing properties of TFs, representing an important tool to design optogenetics experiments in vivo with TFs. © 2018 IEEE.

Tapered Optical Fibers for Optogenetics: Ray Tracing Modeling

E. Maglie;M. Pisanello;F. Pisano;L. Sileo;M. De Vittorio;
2018

Abstract

We present a Ray Tracing model of tapered optical fibers (TF), recently proposed for both wide-volume and site-selective optical control of neural activity [1]. Light-delivery properties of TFs are computationally investigated by identifying the emitting region of the taper and the resulting output angles. This is done in two alternative light coupling modes: i) injecting light within the entire acceptance angle of the optical fiber, generating light output from almost the entire taper, and ii) selecting a specific input angle, therefore allowing light delivery from a specific portion of the TF. In both cases a good agreement with previously reported experimental data has been obtained, letting us envision that the proposed approach can be used to study the mode-division demultiplexing properties of TFs, representing an important tool to design optogenetics experiments in vivo with TFs. © 2018 IEEE.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11587/435050
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