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This paper presents optimized structural interface between 3D SU8 prism and SOI waveguide for reduced coupling loss at the interface, hence increasing light transmission efficiency over the system. The coupling loss reduced to 10 % at each optimized interface thanks to SU8 overlap on tip of SOI waveguide and partly etched BOX under the interface. With large tolerance up to 5 µm, the interface can...
An image-controlled dielectrophoretic (ODEP) optofluidic system is demonstrated to manipulate microsphere resonators in an aqueous medium. Through this platform we can freely position the microshere resonator near a waveguide to manage the coupling condition. The spectral analysis shows the microsphere resonator can be operated in the under-coupling, critical coupling and over-coupling regimes.
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