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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 4 — Apr. 23, 2008

On-chip gas detection in silicon optical microcavities

Jacob T. Robinson, Long Chen, and Michal Lipson  »View Author Affiliations


Optics Express, Vol. 16, Issue 6, pp. 4296-4301 (2008)
http://dx.doi.org/10.1364/OE.16.004296


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Abstract

We demonstrate a chip-scale photonic system for the room-temperature detection of gas composition and pressure using a slotted silicon microring resonator. We measure shifts in the resonance wavelength due to the presence and pressure of acetylene gas and resolve differences in the refractive index as small as 10-4 in the near-IR. The observed sensitivity of this device (enhanced due to the slot-waveguide geometry) agrees with the expected value of 490 nm/refractive index unit.

© 2008 Optical Society of America

OCIS Codes
(130.6010) Integrated optics : Sensors
(230.5750) Optical devices : Resonators
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Remote sensing and sensors

History
Original Manuscript: February 11, 2008
Revised Manuscript: March 10, 2008
Manuscript Accepted: March 10, 2008
Published: March 13, 2008

Virtual Issues
Vol. 3, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Jacob T. Robinson, Long Chen, and Michal Lipson, "On-chip gas detection in silicon optical microcavities," Opt. Express 16, 4296-4301 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-16-6-4296


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