A nano-optofluidic waveguide coupler with super-resolution via concurrent dean flows

Author

Chin, L.K. ; Yang, Yi ; Lei, Lei ; Liu, A.Q.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2013

fDate

16-20 June 2013

Firstpage

1791

Lastpage

1794

Abstract

This paper presents a nano-optofluidic waveguide coupler realized by a pair of concurrent dean flows. Distinctively different from solid waveguide coupler, this nano-optofluidic waveguides consists of a laminar liquid flow, which exhibits spatially varying bidirectional refractive index profile that support novel evanescent coupling phenomenon. The nanogap and the refractive index contrast of the nano-optofluidic waveguides can be measured with super-resolution in nm by analyzing its resulted evanescent coupling pattern. The nano-optofluidic waveguides can be used for biomolecular manipulation and detection in near future.

Keywords

laminar flow; nanofluidics; nanophotonics; optical couplers; refractive index; bidirectional refractive index profile; concurrent dean flows; evanescent coupling phenomenon; laminar liquid flow; nano-gap; nano-optofluidic waveguide coupler; refractive index; super-resolution; Couplers; Couplings; Liquids; Microchannel; Optical waveguides; Refractive index; Waveguide discontinuities; Dean flows; Optofluidics; Transformation optics; micro/nanofluidics; waveguide coupling;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013 Transducers & Eurosensors XXVII: The 17th International Conference on

Conference_Location

Barcelona

Type

conf

DOI

10.1109/Transducers.2013.6627136

Filename

6627136