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Proceedings Paper

Femtosecond laser drilling of optical fibers for sensing in microfluidic applications
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Paper Abstract

We report on a technique for precise hole drilling in optical fibers using tightly focused femtosecond laser pulses. This direct laser writing approach makes it possible to minimize the amount of waveguide material for uncompromised mechanical performance of the fiber. The proof-of-the-principle of the fiber integration into a microfluidic chip is demonstrated. We show that fabricated holes in the waveguides can be used for measurement of absorption coefficient and refractive index changes at 1x10-3 refractive index units and 2 cm-1 for refractive index and absorption changes, respectively. Simple design and integration possibility of laser-fabricated waveguide sensors is prospective for optofluidic applications.

Paper Details

Date Published: 15 October 2012
PDF: 10 pages
Proc. SPIE 8463, Nanoengineering: Fabrication, Properties, Optics, and Devices IX, 84630T (15 October 2012); doi: 10.1117/12.929607
Show Author Affiliations
Ricardas Buividas, Swinburne Univ. of Technology (Australia)
Mindaugas Mikutis, Vilnius Univ. (Lithuania)
Altechna Co. Ltd. (Lithuania)
Gediminas Gervinskas, Swinburne Univ. of Technology (Australia)
Daniel Day, Swinburne Univ. of Technology (Australia)
Gintas Slekys, Altechna Co. Ltd. (Lithuania)
Saulius Juodkazis, Swinburne Univ. of Technology (Australia)
Melbourne Ctr. for Nanofabrication (Australia)

Published in SPIE Proceedings Vol. 8463:
Nanoengineering: Fabrication, Properties, Optics, and Devices IX
Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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