Modular assembly of optical nanocircuits

Jinwei Shi, Francesco Monticone, Sarah Elias, Yanwen Wu, Daniel Ratchford, Xiaoqin Li () and Andrea Alù ()
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Jinwei Shi: Center for Complex Quantum Systems, The University of Texas at Austin
Francesco Monticone: The University of Texas at Austin
Sarah Elias: Center for Complex Quantum Systems, The University of Texas at Austin
Yanwen Wu: Center for Complex Quantum Systems, The University of Texas at Austin
Daniel Ratchford: Center for Complex Quantum Systems, The University of Texas at Austin
Xiaoqin Li: Center for Complex Quantum Systems, The University of Texas at Austin
Andrea Alù: The University of Texas at Austin

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract A key element enabling the microelectronic technology advances of the past decades has been the conceptualization of complex circuits with versatile functionalities as being composed of the proper combination of basic ‘lumped’ circuit elements (for example, inductors and capacitors). In contrast, modern nanophotonic systems are still far from a similar level of sophistication, partially because of the lack of modularization of their response in terms of basic building blocks. Here we demonstrate the design, assembly and characterization of relatively complex photonic nanocircuits by accurately positioning a number of metallic and dielectric nanoparticles acting as modular lumped elements. The nanoparticle clusters produce the desired spectral response described by simple circuit rules and are shown to be dynamically reconfigurable by modifying the direction or polarization of impinging signals. Our work represents an important step towards extending the powerful modular design tools of electronic circuits into nanophotonic systems.

Date: 2014
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DOI: 10.1038/ncomms4896

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