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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. 28, Iss. 7 — Jul. 1, 2011
  • pp: 1611–1615

Coupling-induced high-sensitivity silicon microring intensity-based sensor

Huaxiang Yi, David S. Citrin, and Zhiping Zhou  »View Author Affiliations

JOSA B, Vol. 28, Issue 7, pp. 1611-1615 (2011)

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We propose a coupling-induced intensity-sensing mechanism based on a microring resonator. Different from the conventional intensity sensor, the resonator is working under the analyte-induced variable coupling. The coupling coefficients are highly sensitive to changes of the analyte, thus leading to significant analyte-dependent output intensity. This advanced sensing mechanism is proved with a detection limit of 1.23 × 10 7 , predicted based on the coupled-mode theory. By introducing a phase bias in the Mach–Zehnder interferometer, the detection limit may be enhanced further to 4 × 10 8 , which is demonstrated to be up to 1 order of magnitude more sensitive than that provided by comparable conventional sensors.

© 2011 Optical Society of America

OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(230.4555) Optical devices : Coupled resonators

ToC Category:
Optical Devices

Original Manuscript: January 19, 2011
Revised Manuscript: May 8, 2011
Manuscript Accepted: May 12, 2011
Published: June 6, 2011

Huaxiang Yi, David S. Citrin, and Zhiping Zhou, "Coupling-induced high-sensitivity silicon microring intensity-based sensor," J. Opt. Soc. Am. B 28, 1611-1615 (2011)

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