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We present a spot size converter (SCC) for coupling standard single mode fibers with 10µm mode field diameter to 500nm × 220nm SOI waveguides. Thanks to the large mode supported at the SSC input, the device offers an alignment tolerance of ±2.2µm for 1dB excess loss, which is comparable to the alignment tolerance between two butt-coupled standard single mode fibers. An optimized design of the SSC...
We propose new parameters to characterize a whispering gallery mode spectrum, which can be regarded as reliable independent biodetection indicators for an instantaneous microsphere's spectrum. With these parameters, since there is no need for spectral comparison to an analyte-free reference, three-dimensional stirring of fluorescent microspheres in fluidic setup is allowed. Through an analysis of...
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