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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 14 — Jul. 15, 2012
  • pp: 2937–2939

Refraction-based photonic crystal diode

Ahmet Cicek, Melike B. Yucel, Olgun Adem Kaya, and Bulent Ulug  »View Author Affiliations

Optics Letters, Vol. 37, Issue 14, pp. 2937-2939 (2012)

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A system composed of air holes in a dielectric host to form two square photonic crystals, with the same orientation and lattice constant but different scatterer radii, making an interface along their body diagonals, is numerically demonstrated to facilitate unidirectional light transmission. Band structure computations are carried out via the plane wave expansion method, whereas finite-difference time-domain simulations are carried out to investigate the transient behavior. Unidirectional light transmission is achieved over two adjacent stop bands along the ΓX direction, which are circumvented in the forward direction by scaling down the wave vector and rotating the surface normal. Contrast ratios as high as 0.9 are attained within the lower stop band.

© 2012 Optical Society of America

OCIS Codes
(120.5710) Instrumentation, measurement, and metrology : Refraction
(230.5298) Optical devices : Photonic crystals

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: May 14, 2012
Revised Manuscript: June 1, 2012
Manuscript Accepted: June 2, 2012
Published: July 12, 2012

Ahmet Cicek, Melike B. Yucel, Olgun Adem Kaya, and Bulent Ulug, "Refraction-based photonic crystal diode," Opt. Lett. 37, 2937-2939 (2012)

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