title: Multi-mode mitigation in an optofluidic chip for particle manipulation and sensing.
abstract: A new waveguide design for an optofluidic chip is presented. It mitigates multi-mode behavior in solid and liquid-core waveguides by increasing fundamental mode coupling to 82% and 95%, respectively. Additionally, we demonstrate a six-fold improvement in lateral confinement of optically guided dielectric microparticles and double the detection efficiency of fluorescent particles.
authors.affiliation: School of Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA. pmeasor@soe.ucsc.edu
authors.forename: Philip
authors.initials: P
authors.lastname: Measor
authors.forename: Sergei
authors.initials: S
authors.lastname: Kühn
authors.forename: Evan J
authors.initials: EJ
authors.lastname: Lunt
authors.forename: Brian S
authors.initials: BS
authors.lastname: Phillips
authors.forename: Aaron R
authors.initials: AR
authors.lastname: Hawkins
authors.forename: Holger
authors.initials: H
authors.lastname: Schmidt
mesh_terms: D001704:Biopolymers / Q000032:analysis*; D015374:Biosensing Techniques / Q000295:instrumentation*; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D017022:Flow Injection Analysis / Q000295:instrumentation*; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation*; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D013050:Spectrometry, Fluorescence / Q000295:instrumentation*; D018511:Systems Integration
chemical_list: D001704:Biopolymers