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Qiu C, Chen J, Xia Y, et al. Active dielectric antenna on chip for spatial light modulation. Sci Rep. 2012;2:855doi: 10.1038/srep00855.
Qiu, C., Chen, J., Xia, Y., & Xu, Q. (2012). Active dielectric antenna on chip for spatial light modulation. Scientific reports, 2855. https://doi.org/10.1038/srep00855
Qiu, Ciyuan, et al. "Active dielectric antenna on chip for spatial light modulation." Scientific reports vol. 2 (2012): 855. doi: https://doi.org/10.1038/srep00855
Qiu C, Chen J, Xia Y, Xu Q. Active dielectric antenna on chip for spatial light modulation. Sci Rep. 2012;2:855. doi: 10.1038/srep00855. Epub 2012 Nov 14. PMID: 23152946; PMCID: PMC3497059.
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Sci Rep. 2012;2:855. doi: 10.1038/srep00855. Epub 2012 Nov 14.

Active dielectric antenna on chip for spatial light modulation.

Scientific reports

Ciyuan Qiu, Jianbo Chen, Yang Xia, Qianfan Xu

Affiliations

  1. Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA.

PMID: 23152946 PMCID: PMC3497059 DOI: 10.1038/srep00855

Abstract

Integrated photonic resonators are widely used to manipulate light propagation in an evanescently-coupled waveguide. While the evanescent coupling scheme works well for planar optical systems that are naturally waveguide based, many optical applications are free-space based, such as imaging, display, holographics, metrology and remote sensing. Here we demonstrate an active dielectric antenna as the interface device that allows the large-scale integration capability of silicon photonics to serve the free-space applications. We show a novel perturbation-base diffractive coupling scheme that allows a high-Q planer resonator to directly interact with and manipulate free-space waves. Using a silicon-based photonic crystal cavity whose resonance can be rapidly tuned with a p-i-n junction, a compact spatial light modulator with an extinction ratio of 9.5 dB and a modulation speed of 150 MHz is demonstrated. Method to improve the modulation speed is discussed.

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