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Optics Letters

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  • Vol. 29, Iss. 14 — Jul. 15, 2004
  • pp: 1626–1628

Experimental demonstration of guiding and confining light in nanometer-size low-refractive-index material

Qianfan Xu, Vilson R. Almeida, Roberto R. Panepucci, and Michal Lipson  »View Author Affiliations


Optics Letters, Vol. 29, Issue 14, pp. 1626-1628 (2004)
http://dx.doi.org/10.1364/OL.29.001626


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Abstract

We experimentally demonstrate a novel silicon waveguide structure for guiding and confining light in nanometer-wide low-refractive-index material. The optical field in the low-index material is enhanced because of the discontinuity of the electric field at high-index-contrast interfaces. We measure a 30% reduction of the effective index of light propagating in the novel structure due to the presence of the nanometer-wide low-index region, evidencing the guiding and confinement of light in the low-index material. We fabricate ring resonators based on the structure and show that the structure can be implemented in highly integrated photonics.

© 2004 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices

Citation
Qianfan Xu, Vilson R. Almeida, Roberto R. Panepucci, and Michal Lipson, "Experimental demonstration of guiding and confining light in nanometer-size low-refractive-index material," Opt. Lett. 29, 1626-1628 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-14-1626


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References

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