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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 14 — Jul. 4, 2011
  • pp: 13020–13030

Homogeneous and isotropic bends to tunnel waves through multiple different/equal waveguides along arbitrary directions

Tiancheng Han, Cheng-Wei Qiu, Jian-Wen Dong, Xiaohong Tang, and Said Zouhdi  »View Author Affiliations

Optics Express, Vol. 19, Issue 14, pp. 13020-13030 (2011)

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We propose a novel optical transformation to design homogeneous isotropic bends connecting multiple waveguides of different cross sections which can ideally tunnel the wave along any directions through multiple waveguides. First, the general expressions of homogeneous and anisotropic parameters in the bend region are derived. Second, the anisotropic material can be replaced by only two kinds of isotropic materials and they can be easily arranged in planarly stratified configuration. Finally, an arbitrary bender with homogeneous and isotropic materials is constructed, which can bend electromagnetic wave to any desired directions. To achieve the utmost aim, an advanced method is proposed to design nonmagnetic, isotropic and homogeneous bends that can bend waves along arbitrary directions. More importantly, all of the proposed bender has compact shape due to all flat boundaries, while the wave can still be perfectly tunneled without mode distortion. Numerical results validate these functionalities, which make the bend much easier in fabrication and application.

© 2011 OSA

OCIS Codes
(160.1190) Materials : Anisotropic optical materials
(230.0230) Optical devices : Optical devices
(260.2710) Physical optics : Inhomogeneous optical media

ToC Category:
Physical Optics

Original Manuscript: December 9, 2010
Revised Manuscript: February 26, 2011
Manuscript Accepted: April 14, 2011
Published: June 22, 2011

Tiancheng Han, Cheng-Wei Qiu, Jian-Wen Dong, Xiaohong Tang, and Said Zouhdi, "Homogeneous and isotropic bends to tunnel waves through multiple different/equal waveguides along arbitrary directions," Opt. Express 19, 13020-13030 (2011)

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