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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 21 — Oct. 10, 2011
  • pp: 20586–20596

Directional free-space coupling from photonic crystal waveguides

Cheng-Chia Tsai, Jacob Mower, and Dirk Englund  »View Author Affiliations

Optics Express, Vol. 19, Issue 21, pp. 20586-20596 (2011)

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We present a general approach for coupling a specific mode in a planar photonic crystal (PC) waveguide to a desired free-space mode. We apply this approach to a W1 PC waveguide by introducing small index perturbations to selectively couple a particular transverse mode to an approximately Gaussian, slowly diverging free space mode. This “perturbative photonic crystal waveguide coupler” (PPCWC) enables efficient interconversion between selectable propagating photonic crystal and free space modes with minimal design perturbations.

© 2011 OSA

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(250.5300) Optoelectronics : Photonic integrated circuits
(130.5296) Integrated optics : Photonic crystal waveguides
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: August 4, 2011
Revised Manuscript: August 29, 2011
Manuscript Accepted: August 29, 2011
Published: October 3, 2011

Cheng-Chia Tsai, Jacob Mower, and Dirk Englund, "Directional free-space coupling from photonic crystal waveguides," Opt. Express 19, 20586-20596 (2011)

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