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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 5 — Mar. 11, 2013
  • pp: 6633–6639

Microfluidic refractive index sensor based on an all-silica in-line FabryPerot interferometer fabricated with microstructured fibers

Jiajun Tian, Yujie Lu, Qi Zhang, and Ming Han  »View Author Affiliations


Optics Express, Vol. 21, Issue 5, pp. 6633-6639 (2013)
http://dx.doi.org/10.1364/OE.21.006633


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Abstract

We report a microfluidic fiber-optic refractive index (RI) sensor based on an in-line Fabry-Perot (FP) interferometer, which is formed by a silica tube sandwiched by two microstructured fibers (MFs). The sensor reported here can be fabricated at low cost, possess a robust structure, and has microfluidic capability. The micro-sized holes in the MFs naturally function as microfluidic channels through which liquid samples can be efficiently and conveniently delivered into and out of the FP cavity by a pressure/vacuum pump system for high-performance RI measurement. Due to the microfluidic capability enabled by the MFs, only sub microliter sample is required. We also experimentally study and demonstrate the superior performances of the sensor in terms of high RI sensitivity, good measurement repeatability, and low temperature cross-sensitivity.

© 2013 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Sensors

History
Original Manuscript: February 4, 2013
Revised Manuscript: March 3, 2013
Manuscript Accepted: March 3, 2013
Published: March 8, 2013

Virtual Issues
Vol. 8, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Jiajun Tian, Yujie Lu, Qi Zhang, and Ming Han, "Microfluidic refractive index sensor based on an all-silica in-line Fabry–Perot interferometer fabricated with microstructured fibers," Opt. Express 21, 6633-6639 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-5-6633


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