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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 2 — Jan. 27, 2014
  • pp: 2051–2059

Demonstration of a 3-dB directional coupler with enhanced robustness to gap variations for silicon wire waveguides

G. W. Cong, K. Suzuki, S. H. Kim, K. Tanizawa, S. Namiki, and H. Kawashima  »View Author Affiliations


Optics Express, Vol. 22, Issue 2, pp. 2051-2059 (2014)
http://dx.doi.org/10.1364/OE.22.002051


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Abstract

We demonstrate a robust 3-dB directional coupler which has a narrow silicon wire core and a wide gap. Sensitivity to the gap variation is decreased to one tenth that of a conventional directional coupler. Better spectral stability due to the enhanced robustness to waveguide geometrical fluctuations was experimentally verified.

© 2014 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.1360) Optical devices : Beam splitters
(230.7370) Optical devices : Waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: November 21, 2013
Revised Manuscript: January 13, 2014
Manuscript Accepted: January 14, 2014
Published: January 23, 2014

Citation
G. W. Cong, K. Suzuki, S. H. Kim, K. Tanizawa, S. Namiki, and H. Kawashima, "Demonstration of a 3-dB directional coupler with enhanced robustness to gap variations for silicon wire waveguides," Opt. Express 22, 2051-2059 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-2-2051


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References

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