Theory and Experiment of Isotropic Electromagnetic Beam Bender Made of Dielectric Materials

Abstract:

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In this paper, we utilize the deformation transformation optics (DTO) method to design electromagnetic beam bender, which can change the direction of electromagnetic wave propagation as desire. According to DTO, the transformed material parameters can be expressed by deformation tensor of the spatial transformation. For a beam bender, since the three principal stretches at each point induced by the spatial transformation are independent to each other, there are many possibilities to simplify the transformed material parameters of the bender by adjusting the stretches independently. With the DTO method, we show that the reported reduced parameters of the bender obtained by equivalent dispersion relation can be derived as a special case. An isotropic bender is also proposed according to this method, and it is fabricated by stacking dielectric materials in layered form. Experiments validate the function of the designed isotropic bender for a TE wave; it is also shown that the isotropic bender has a broadband with low loss, compared with the metamaterial bender. The isotropic bender has much easier design and fabrication procedures than the metamaterial bender.

Info:

Periodical:

Advanced Materials Research (Volumes 150-151)

Edited by:

Jinglong Bu, Zhengyi Jiang and Sihai Jiao

Pages:

1508-1516

DOI:

10.4028/www.scientific.net/AMR.150-151.1508

Citation:

Q. B. Deng et al., "Theory and Experiment of Isotropic Electromagnetic Beam Bender Made of Dielectric Materials", Advanced Materials Research, Vols. 150-151, pp. 1508-1516, 2011

Online since:

October 2010

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Price:

$35.00

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