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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 33 — Nov. 20, 2011
  • pp: 6254–6260

Ultrasensitive thermal sensors based on whispering gallery modes in a polymer core optical ring resonator

Nai Lin, Lan Jiang, Sumei Wang, Hai Xiao, Yongfeng Lu, and Hailung Tsai  »View Author Affiliations


Applied Optics, Vol. 50, Issue 33, pp. 6254-6260 (2011)
http://dx.doi.org/10.1364/AO.50.006254


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Abstract

This study proposes a thermal sensor based on whispering gallery modes (WGMs) in a polymer core optical ring resonator (PCORR). The thermal sensitivity and detection limit (i.e., the temperature resolution) for WGMs of various orders and polarizations are theoretically studied as a function of the ring wall thickness. The results show that the temperature detection limits can be as low as 4 × 10 5 and 6 × 10 6 K for laser linewidths of 2 and 0.3 MHz , respectively. The ultrahigh temperature resolution makes the PCORR a very promising platform for temperature measurement. The analysis also shows that the WGM of a lower order has better thermal sensing performance and a thinner optimal thickness of the ring resonator.

© 2011 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(160.5470) Materials : Polymers
(230.5750) Optical devices : Resonators
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 31, 2011
Revised Manuscript: July 25, 2011
Manuscript Accepted: August 26, 2011
Published: November 17, 2011

Citation
Nai Lin, Lan Jiang, Sumei Wang, Hai Xiao, Yongfeng Lu, and Hailung Tsai, "Ultrasensitive thermal sensors based on whispering gallery modes in a polymer core optical ring resonator," Appl. Opt. 50, 6254-6260 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-33-6254

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