Abstract
A femtosecond laser is used to fabricate both microfluidic channels and high quality optical waveguides, intersecting each other on a single glass substrate. Fluorescence in fluids filling the microfluidic channels has been selectively excited in several points by coupling light in the optical waveguides. Waveguide-microchannel integration opens several prospects for in situ sensing in lab-on-a-chip devices.
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