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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 21832–21841

Group-index independent coupling to band engineered SOI photonic crystal waveguide with large slow-down factor

Somayyeh Rahimi, Amir Hosseini, Xiaochuan Xu, Harish Subbaraman, and Ray T. Chen  »View Author Affiliations

Optics Express, Vol. 19, Issue 22, pp. 21832-21841 (2011)

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Group-index independent coupling to a silicon-on-insulator (SOI) based band-engineered photonic crystal (PCW) waveguide is presented. A single hole size is used for designing both the PCW coupler and the band-engineered PCW to improve fabrication yield. Efficiency of several types of PCW couplers is numerically investigated. An on-chip integrated Fourier transform spectral interferometry device is used to experimentally determine the group-index while excluding the effect of the couplers. A low-loss, low-dispersion slow light transmission over 18nm bandwidth under the silica light line with a group index of 26.5 is demonstrated, that corresponds to the largest slow-down factor of 0.31 ever demonstrated for a PCW with oxide bottom cladding.

© 2011 OSA

OCIS Codes
(230.7390) Optical devices : Waveguides, planar
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Integrated Optics

Original Manuscript: August 22, 2011
Revised Manuscript: October 4, 2011
Manuscript Accepted: October 6, 2011
Published: October 20, 2011

Somayyeh Rahimi, Amir Hosseini, Xiaochuan Xu, Harish Subbaraman, and Ray T. Chen, "Group-index independent coupling to band engineered SOI photonic crystal waveguide with large slow-down factor," Opt. Express 19, 21832-21841 (2011)

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