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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 22 — Oct. 27, 2008
  • pp: 17209–17214

Compact, low cross-talk CWDM demultiplexer using photonic crystal superprism

Damien Bernier, Xavier Le Roux, Anatole Lupu, Delphine Marris-Morini, Laurent Vivien, and Eric Cassan  »View Author Affiliations

Optics Express, Vol. 16, Issue 22, pp. 17209-17214 (2008)

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This paper addresses the problem of a photonic crystal (PhC) superprism design for coarse wavelength division multiplexing (CWDM) application. The proposed solution consists in using a PhC structure that presents an efficient balance between the wavelength dispersion and the beam divergence. It is shown that a bidimensional rhombohedral lattice PhC displays both a high beam collimation and an important wavelength dependant angular dispersion. We report the design, fabrication and experimental demonstration of a 4-channel optical demultiplexer with a spectral spacing of 25 nm and a cross-talk level of better than -16 dB using a 2800 µm2 PhC region. The minimum of insertion losses of the demultiplexer is less than 2 dB. The obtained results present an important milestone toward PhC devices for practical applications.

© 2008 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: June 13, 2008
Revised Manuscript: July 25, 2008
Manuscript Accepted: July 25, 2008
Published: October 13, 2008

Damien Bernier, Xavier Le Roux, Anatole Lupu, Delphine Marris-Morini, Laurent Vivien, and Eric Cassan, "Compact, low cross-talk CWDM demultiplexer using photonic crystal superprism," Opt. Express 16, 17209-17214 (2008)

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