We demonstrate integrated optical ring resonators as time-resolved sensors with 3.2e-5 refractive index unit sensitivity embedded in microfluidic channels. Furthermore, we report the chip-scale detection of segmented flow with different liquid-film thicknesses and capillary numbers.
© 2010 The Optical Society
(130.0130) Integrated optics : Integrated optics
(130.6010) Integrated optics : Sensors
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.4788) Remote sensing and sensors : Optical sensing and sensors
M. Grad, C. C. Tsai, M. Yu, D. L. Kwong, C. W. Wong, and D. Attinger, "Time-Resolved High-Sensitivity Sensing of Liquid Films in Microfluidic Channels with Optofluidic Microresonators," in Conference on Lasers and Electro-Optics 2010, OSA Technical Digest (CD) (Optical Society of America, 2010), paper CWM2.
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