29 January 2018 Optical antenna for a visible light communications receiver
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Visible Light Communications (VLC) receivers adapted to be used in high transmission rates will eventually use either, high aperture lenses or non-linear optical elements capable of converting light arriving to the receiver into an electric signal. The high aperture lens case, reveals a challenge from an optical designers point-of-view. As a matter of fact, the lens must collect a wide aperture intensity flux using a limited aperture as its use is intended to portable devices. This last also limits both, lens thickness and its focal length. Here, we show a first design to be adapted to a VLC receiver that take these constraints into account. This paper describes a method to design catadioptric and monolithic lenses to be used as an optical collector of light entering from a near point light source as a spherical fan L with a wide acceptance angle α◦ and high efficiency. These lenses can be mass produced and therefore one can find many practical applications in VLC equipped devices. We show a first design for a near light source without magnification, and second one with a detector’s magnification in a meridional section. We utilize rigorous geometric optics, vector analysis and ordinary differential equations.
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Juan Camilo Valencia-Estrada, Juan Camilo Valencia-Estrada, Jorge García-Márquez, Jorge García-Márquez, Suat Topsu, Suat Topsu, Luc Chassagne, Luc Chassagne, } "Optical antenna for a visible light communications receiver ", Proc. SPIE 10559, Broadband Access Communication Technologies XII, 105590L (29 January 2018); doi: 10.1117/12.2290016; https://doi.org/10.1117/12.2290016

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