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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 24 — Nov. 22, 2010
  • pp: 25151–25157

Series-coupled silicon racetrack resonators and the Vernier effect: theory and measurement

Robi Boeck, Nicolas A. Jaeger, Nicolas Rouger, and Lukas Chrostowski  »View Author Affiliations


Optics Express, Vol. 18, Issue 24, pp. 25151-25157 (2010)
http://dx.doi.org/10.1364/OE.18.025151


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Abstract

Silicon-on-insulator racetrack resonators can be used as multiplexers in wavelength division multiplexing applications. The free spectral range should be comparable to the span of the C-band so that a maximum number of channels can be multiplexed. However, the free spectral range is inversely proportional to the length of the resonator and, therefore, bending losses can become non-negligible. A viable alternative to increase the free spectral range is to use the Vernier effect. In this work, we present the theory of series-coupled racetrack resonators exhibiting the Vernier effect. We demonstrate the experimental performance of the device using silicon-on-insulator strip waveguides. The extended free spectral range is 36 nm and the interstitial peak suppression is from 9 dB to 17 dB.

© 2010 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(230.5750) Optical devices : Resonators
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

History
Original Manuscript: August 24, 2010
Revised Manuscript: October 22, 2010
Manuscript Accepted: November 2, 2010
Published: November 17, 2010

Citation
Robi Boeck, Nicolas A. Jaeger, Nicolas Rouger, and Lukas Chrostowski, "Series-coupled silicon racetrack resonators and the Vernier effect: theory and measurement," Opt. Express 18, 25151-25157 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-24-25151


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