Open AccessMulti-mode mitigation in an optofluidic chip for particle manipulation and sensing
Author(s) -
Philip Measor,
Sergei Kühn,
Evan J. Lunt,
Brian S. Phillips,
Aaron R. Hawkins,
Holger Schmidt
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.024342
Subject(s) - materials science , optics , optofluidics , dielectric , waveguide , chip , optoelectronics , coupled mode theory , coupling (piping) , total internal reflection , refractive index , lab on a chip , core (optical fiber) , microfluidics , nanotechnology , physics , engineering , electrical engineering , metallurgy
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.