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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 22242–22247

Coupled optofluidic ring laser for ultrahigh- sensitive sensing

Xingwang Zhang, Liqiang Ren, Xiang Wu, Hao Li, Liying Liu, and Lei Xu  »View Author Affiliations

Optics Express, Vol. 19, Issue 22, pp. 22242-22247 (2011)

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Ultrahigh sensitivity is achieved in a new active sensor structure: coupled optofluidic ring laser. The sensor consists of one ring laser and one optofluidic tube. The emission intensity of the multimode whispering gallery resonance from the coupled ring laser is strongly modulated. By using the optofluidic tube as the sensing element, and monitoring the envelope shift of the modulated lasing spectrum, we achieved a sensitivity of 5930 nm/RIU, which is two orders of magnitude higher than a conventional ring resonator sensor.

© 2011 OSA

OCIS Codes
(130.6010) Integrated optics : Sensors
(140.3945) Lasers and laser optics : Microcavities
(140.3948) Lasers and laser optics : Microcavity devices
(230.4555) Optical devices : Coupled resonators

ToC Category:
Coupled Resonators

Original Manuscript: June 30, 2011
Revised Manuscript: August 22, 2011
Manuscript Accepted: August 26, 2011
Published: October 24, 2011

Virtual Issues
Vol. 6, Iss. 11 Virtual Journal for Biomedical Optics
Collective Phenomena (2011) Optics Express

Xingwang Zhang, Liqiang Ren, Xiang Wu, Hao Li, Liying Liu, and Lei Xu, "Coupled optofluidic ring laser for ultrahigh- sensitive sensing," Opt. Express 19, 22242-22247 (2011)

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