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Optical feedback interferometry for microscale-flow sensing study: numerical simulation and experimental validation
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DOI：10.1364/OE.24.023849.png)
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Abstract
En 中文
Optical feedback interferometry (OFI) performance for microscale-flow sensing is studied theoretically and experimentally. A new numerical modeling approach for OFI flow meter spectrum reproduction is presented in this work to study the optical effect on the signal due to the micro-scale channel geometry. Two well-defined frequency peaks are found in the OFI spectrum, this phenomenon can be attributed to the reflection of the forward scattered light on the channel rear interface. The flow rate measurement shows good accuracy over a range of fluid velocities from 16.8 mm/s to 168 mm/s, thus providing a promising tool to study and to optimize the OFI microfluidic sensor system. (C) 2016 Optical Society of America
Keywords:
VELOCITY PROFILE
LASER-DIODE
BLOOD
SENSOR
INTERFERENCE
VELOCIMETRY
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