Femtosecond laser drilling of optical fibers for sensing in microfluidic applications

Ricardas Buividas; Mindaugas Mikutis; Gediminas Gervinskas; Daniel Day; Gintas Slekys; Saulius Juodkazis

doi:10.1117/12.929607

15 October 2012 Femtosecond laser drilling of optical fibers for sensing in microfluidic applications

Ricardas Buividas, Mindaugas Mikutis, Gediminas Gervinskas, Daniel Day, Gintas Slekys, Saulius Juodkazis

Proceedings Volume 8463, Nanoengineering: Fabrication, Properties, Optics, and Devices IX; 84630T (2012) https://doi.org/10.1117/12.929607
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

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.

Citation Download Citation

Ricardas Buividas, Mindaugas Mikutis, Gediminas Gervinskas, Daniel Day, Gintas Slekys, and Saulius Juodkazis "Femtosecond laser drilling of optical fibers for sensing in microfluidic applications", Proc. SPIE 8463, Nanoengineering: Fabrication, Properties, Optics, and Devices IX, 84630T (15 October 2012); https://doi.org/10.1117/12.929607

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