Optical waveguide

 

 

Three-dimensional liquid-core/liquid-cladding (L2) optical waveguide

 

- Objective

·        To construct the three-dimensional L2 waveguide

 

- Experimental Set-up

·        CW Nd:YAG laser (532 nm) is used as a source of waveguide

·        Microchannel is fabricated by conventional soft-lithography

·        Horizontal focusing of core fluid: Dean vortex

·        Vertical focusing of core fluid: two sheath flows

 

Experimental Set-up

 

- Results

·        Core fluid is focused to the center of the channel → Fully L2 waveguide is constructed

·        Waveguide can be considered as a GRIN waveguide since the diffusion occurs from the core fluid to cladding fluid

·        Width of the core flow can be manipulated by adjusting the flow rates of the sheath flows

 

002_Upper view 동영상 삽입

Upper view

    

Side view

 

Cross-sectional view