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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 18 — Aug. 27, 2012
  • pp: 20635–20646

Asymmetric light propagation in chirped photonic crystal waveguides

H. Kurt, D. Yilmaz, A. E. Akosman, and E. Ozbay  »View Author Affiliations

Optics Express, Vol. 20, Issue 18, pp. 20635-20646 (2012)

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We report numerical and experimental investigations of asymmetric light propagation in a newly designed photonic structure that is formed by creating a chirped photonic crystal (PC) waveguide. The use of a non-symmetric distribution of unit cells of PC ensures the obtaining of asymmetric light propagation. Properly designing the spatial modulation of a PC waveguide inherently modifies the band structure. That in turn induces asymmetry for the light’s followed path. The investigation of the transmission characteristics of this structure reveals optical diode like transmission behavior. The amount of power collected at the output of the waveguide centerline is different for the forward and backward propagation directions in the designed configuration. The advantageous properties of the proposed approach are the linear optic concept, compact configuration and compatibility with the integrated photonics. These features are expected to hold great potential for implementing practical optical rectifier-type devices.

© 2012 OSA

OCIS Codes
(120.7000) Instrumentation, measurement, and metrology : Transmission
(130.0130) Integrated optics : Integrated optics
(130.5296) Integrated optics : Photonic crystal waveguides
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: June 28, 2012
Revised Manuscript: August 8, 2012
Manuscript Accepted: August 11, 2012
Published: August 23, 2012

H. Kurt, D. Yilmaz, A. E. Akosman, and E. Ozbay, "Asymmetric light propagation in chirped photonic crystal waveguides," Opt. Express 20, 20635-20646 (2012)

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