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The use of microring resonators to assist in the evanescent field coupling between dissimilar waveguides is proposed and analyzed. Theoretical analysis based on the coupled mode theory and nu-merical example show that complete cross power transfers can be obtained near the microring resonances. Applications of the device include power dividers, low-power thermo-optic or electro-optic switches, and modulators. 相似文献
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Limited heterogeneity of rearranged T-cell receptor V alpha transcripts in brains of multiple sclerosis patients 总被引:49,自引:0,他引:49
J R Oksenberg S Stuart A B Begovich R B Bell H A Erlich L Steinman C C Bernard 《Nature》1990,345(6273):344-346
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