A novel optofluidic evanescent waveguide sensor system for fluorescence spectroscopy fabricated by micro-stereolithography

In this contribution we present the design, fabrication and measurement results of an evanescent liquid-core/ liquid-cladding (L2) waveguide sensor system for on-chip fluorescence spectroscopy. To efficiently excite the sample (fluorescent particles or solutions) in the laminar flow regime a novel h...

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Bibliographic Details
Main Authors: Rosenauer, M., Stampfl, J., Vellekoop, M.J.
Format: Conference Proceeding
Language:English
Subjects:
Fiber lasers
Fluorescence
Fluorescence Spectroscopy
Hydrodynamics
L2 Waveguide
Laser excitation
Liquid waveguides
Optical device fabrication
Optical fiber sensors
Optofluidic
Rapid Prototyping
Sensor systems
Spectroscopy
System-on-a-chip
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Description
Summary:In this contribution we present the design, fabrication and measurement results of an evanescent liquid-core/ liquid-cladding (L2) waveguide sensor system for on-chip fluorescence spectroscopy. To efficiently excite the sample (fluorescent particles or solutions) in the laminar flow regime a novel hydrodynamic focusing design is realized which positions the analyte in the evanescent field region at the core/cladding interface. The fiber-chip-coupled laser light is guided by the L2 waveguide and ensures a relatively uniform fluorescence excitation along the analysis channel. The chip is fabricated by rapid prototyping (micro-stereolithography) in less than 1.5 hours.
ISSN:2159-547X
DOI:10.1109/SENSOR.2009.5285424