Optofluidic waveguide as a transformation optics device for lightwave bending and manipulation

Y. Yang, A.Q. Liu (), L.K. Chin, X.M. Zhang, D.P. Tsai, C.L. Lin, C. Lu, G.P. Wang and N.I. Zheludev
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Y. Yang: School of Electrical and Electronic Engineering, Nanyang Technological University
A.Q. Liu: School of Electrical and Electronic Engineering, Nanyang Technological University
L.K. Chin: School of Electrical and Electronic Engineering, Nanyang Technological University
X.M. Zhang: Hong Kong Polytechnic University
D.P. Tsai: National Taiwan University
C.L. Lin: School of Electrical and Electronic Engineering, Nanyang Technological University
C. Lu: Hong Kong Polytechnic University
G.P. Wang: Wuhan University
N.I. Zheludev: Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton

Nature Communications, 2012, vol. 3, issue 1, 1-7

Abstract: Abstract Transformation optics represents a new paradigm for designing light-manipulating devices, such as cloaks and field concentrators, through the engineering of electromagnetic space using materials with spatially variable parameters. Here we analyse liquid flowing in an optofluidic waveguide as a new type of controllable transformation optics medium. We show that a laminar liquid flow in an optofluidic channel exhibits spatially variable dielectric properties that support novel wave-focussing and interference phenomena, which are distinctively different from the discrete diffraction observed in solid waveguide arrays. Our work provides new insight into the unique optical properties of optofluidic waveguides and their potential applications.

Date: 2012
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DOI: 10.1038/ncomms1662

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