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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 27, Iss. 10 — Oct. 1, 2010
  • pp: 1937–1941

Embedded air core optical nano-waveguides

Soon Thor Lim, Ching Eng Png, and Aaron J. Danner  »View Author Affiliations

JOSA B, Vol. 27, Issue 10, pp. 1937-1941 (2010)

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We propose a nanometer-scale hollow core waveguide that can be fabricated with standard methods on a silicon-on-insulator substrate. High optical confinement in the core is possible, making such a waveguide structure suitable for sensing applications, applications making use of strong optical nonlinearities, and optofluidics applications. We extend a historical method (Marcatili’s method) to provide analytical solutions for field distributions in the device and simulate power confinement, intensity, and parametric dependencies with beam propagation and finite-difference time-domain methods for two polarizations. In an example worked out, the optical confinement in the air core is 40 % of the total waveguide power, which is favorable to that of a standard slot waveguide. The intensity per μ m 2 in the hollow core is 95% higher than in the silicon cladding region, indicating that avoiding optical nonlinearities is also possible.

© 2010 Optical Society of America

OCIS Codes
(230.7370) Optical devices : Waveguides
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Optical Devices

Original Manuscript: April 29, 2010
Revised Manuscript: August 4, 2010
Manuscript Accepted: August 9, 2010
Published: September 2, 2010

Soon Thor Lim, Ching Eng Png, and Aaron J. Danner, "Embedded air core optical nano-waveguides," J. Opt. Soc. Am. B 27, 1937-1941 (2010)

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  1. S. P. Chan, C. E. Png, S. T. Lim, G. T. Reed, and V. M. N. Passaro, “Single mode and polarisation independent silicon-on-insulator waveguides with small cross section,” J. Lightwave Technol. 23, 2103–2111 (2005). [CrossRef]
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