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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 21 — Nov. 1, 2010
  • pp: 3604–3606

Optofluidic pressure sensor based on interferometric imaging

Wuzhou Song and Demetri Psaltis  »View Author Affiliations

Optics Letters, Vol. 35, Issue 21, pp. 3604-3606 (2010)

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We present a chip-scale optofluidic interferometric sensor for measuring liquid pressure based on an imaging method. The chip was constructed with a polymer by multilayer soft lithography. It consists of a flexible air gap optical cavity, which, upon illumination by monochromatic light, generates interference patterns that depend on pressure. The pressure was measured by imaging and analyzing the interference patterns. We also employed a pattern recognition algorithm that significantly simplified the calculation and enhanced the measurement reliability. This pressure sensor was demonstrated with a working range of 0 22 psi and an accuracy of ± 1.4 % of full scale when temperature stabilized.

© 2010 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(160.5470) Materials : Polymers
(120.5475) Instrumentation, measurement, and metrology : Pressure measurement
(130.3990) Integrated optics : Micro-optical devices

ToC Category:
Integrated Optics

Original Manuscript: July 27, 2010
Revised Manuscript: September 22, 2010
Manuscript Accepted: September 28, 2010
Published: October 21, 2010

Wuzhou Song and Demetri Psaltis, "Optofluidic pressure sensor based on interferometric imaging," Opt. Lett. 35, 3604-3606 (2010)

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  1. X. Wang, J. Xu, Y. Zhu, K. L. Cooper, and A. Wang, Opt. Lett. 31, 885 (2006). [CrossRef] [PubMed]
  2. Y. Kim and D. P. Neikirk, IEEE Photon. Technol. Lett. 7, 1471 (1995). [CrossRef]
  3. D. Psaltis, S. R. Quake, and C. Yang, Nature 442, 381 (2006). [CrossRef] [PubMed]
  4. C. Song, N.-T Nguyen, A. K. Asundi, and C. Lee-Ngo Low, Opt. Lett. 34, 3622 (2009). [CrossRef] [PubMed]
  5. W. Song and D. Psaltis, Appl. Phys. Lett. 96, 081101 (2010). [CrossRef]
  6. Y. Cheng, K. Sugioka, and K. Midorikawa, Opt. Lett. 29, 2007 (2004). [CrossRef] [PubMed]
  7. W. Song, A. E. Vasdekis, Z. Li, and D. Psaltis, Appl. Phys. Lett. 94, 051117 (2009). [CrossRef]
  8. W. Song, A. E. Vasdekis, Z. Li, and D. Psaltis, Appl. Phys. Lett. 94, 161110 (2009). [CrossRef]

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