Title :
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
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;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013 Transducers & Eurosensors XXVII: The 17th International Conference on
Conference_Location :
Barcelona
DOI :
10.1109/Transducers.2013.6627136
