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Optics Letters

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  • Vol. 29, Iss. 23 — Dec. 1, 2004
  • pp: 2782–2784

Photonic crystal slabs demonstrating strong broadband suppression of transmission in the presence of disorders

Onur Kilic, Sora Kim, Wonjoo Suh, Yves-Alain Peter, Aasmund S. Sudbø, Mehmet F. Yanik, Shanhui Fan, and Olav Solgaard  »View Author Affiliations


Optics Letters, Vol. 29, Issue 23, pp. 2782-2784 (2004)
http://dx.doi.org/10.1364/OL.29.002782


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Abstract

We characterize the transmission spectra of out-of-plane, normal-incidence light of two-dimensional silicon photonic crystal slabs and observe excellent agreement between the measured data and finite-difference time-domain simulations over the 1050–1600-nm wavelength range. Crystals that are 340 nm thick and have holes of 330-nm radius on a square lattice of 998-nm pitch show 20-dB extinction in transmission from 1220 to 1255 nm. Increasing the hole radius to 450 nm broadens the extinction band further, and we obtain >85% extinction from 1310 to 1550 nm. Discrepancies between simulation and measurement are ascribed to disorder in the photonic lattice, which is measured through image processing on high-resolution scanning electron micrographs. Analysis of crystal imperfections indicates that they tend to average out narrowband spectral features, while having relatively small effects on broadband features.

© 2004 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(120.2440) Instrumentation, measurement, and metrology : Filters
(230.4040) Optical devices : Mirrors
(230.5750) Optical devices : Resonators

Citation
Onur Kilic, Sora Kim, Wonjoo Suh, Yves-Alain Peter, Aasmund S. Sudbø, Mehmet F. Yanik, Shanhui Fan, and Olav Solgaard, "Photonic crystal slabs demonstrating strong broadband suppression of transmission in the presence of disorders," Opt. Lett. 29, 2782-2784 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-23-2782


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References

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