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Proceedings Paper

Microfluidic chip for spectroscopic and refractometric analysis
Author(s): A. R. Ribeiro; I. Martinho; J. B. Tillak; I. Bernacka-Wojcik; D. Barata; P. A. S. Jorge; H. Águas; A. G. Oliva
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Paper Abstract

In this paper an optofluidic chip for simultaneous determination of refractive index and acquisition of absorption or fluorescent spectra is described. The system comprises a microfluidic channel with multiple inlet/outlet for sample handling and a dual fiber optic probe, standing face to face across the channel, for the optical measurements. An FBG based Fabry Perot cavity, and a Braggmeter, allow for interferometric measurement of the refractive index while external illumination and a multimode fiber enable acquisition of the absorption/fluorescence spectra with a CCD spectrometer. Preliminary results showing the viability of simultaneous measurement are obtained from the characterization of mixed samples with distinct refractive index and dye concentrations.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84211Y (17 October 2012); doi: 10.1117/12.975248
Show Author Affiliations
A. R. Ribeiro, INESC Porto (Portugal)
Univ. do Porto (Portugal)
I. Martinho, Univ. Nova de Lisboa (Portugal)
J. B. Tillak, INESC Porto (Portugal)
I. Bernacka-Wojcik, Univ. do Porto (Portugal)
D. Barata, Univ. Nova de Lisboa (Portugal)
P. A. S. Jorge, INESC Porto (Portugal)
H. Águas, Univ. Nova de Lisboa (Portugal)
A. G. Oliva, Univ. Nova de Lisboa (Portugal)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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