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Dual-microring-resonator interference sensor
2009
Applied Physics Letters
Preserved Fulltext
Dual-microring-resonator interference with the microrings on separate arms of a Mach-Zehnder interferometer is shown to provide the basis for high-performance sensors. The output spectrum, which depends on the overlap of the resonances of the two microring resonators, depends sensitively on the resonance shift of one of the microrings due to the presence of an analyte. The sensitivity and detection limit are obtained theoretically and found to be as large as 0.31 nm overlap resonance shift
doi:10.1063/1.3263726
fatcat:f2sjalnxwrcuvdvw3rcvozyelu