We demonstrate on-chip absorption spectroscopy using silicon microring resonators with integrated microfluidic channels. Using a 40?m radius resonator with Q>15,000 we show absorption spectra of less than 90nL volumes of water and methanol from 1460nm-1560nm.
© 2008 Optical Society of America
A. Nitkowski and M. Lipson, "On-Chip Spectroscopy Using Compact Silicon Microring Resonators Integrated with Microfluidic Channels," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest (CD) (Optical Society of America, 2008), paper CThII7.
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