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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 20 — Sep. 27, 2010
  • pp: 20681–20689

Guiding effects in waveguides with anti-symmetric refractive index layouts

Shlomo Ruschin  »View Author Affiliations

Optics Express, Vol. 18, Issue 20, pp. 20681-20689 (2010)

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This paper presents and analyzes configurations of waveguides composed by both, regular dielectrics and negative-index materials disposed in an anti-symmetric way with respect to the optical axis. In its basic form, the configuration includes two guiding layers and two cladding media, where both the cladding and the guiding pairs have opposite-signed refractive index. A geometrical analysis shows that paths are closed, hinting the possibility of localized modes or light trapping with zero ray velocity. The ray model shows also a quasi-perfect imaging effect for off-axis objects. A modal approach shows that trapping is broadband and the propagation constant spectrum is continuous. When cores are allowed different widths, control of the group velocity is possible. More general anti-symmetrically mirrored layouts are also addressed.

© 2010 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(350.3618) Other areas of optics : Left-handed materials
(160.3918) Materials : Metamaterials

ToC Category:
Physical Optics

Original Manuscript: July 6, 2010
Revised Manuscript: August 12, 2010
Manuscript Accepted: August 13, 2010
Published: September 15, 2010

Shlomo Ruschin, "Guiding effects in waveguides with anti-symmetric refractive index layouts," Opt. Express 18, 20681-20689 (2010)

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