• Photonic Sensors
  • Vol. 7, Issue 2, 97 (2017)
Lei ZHANG1、*, Zhang ZHANG1, Yichuan WANG1, Meiying YE2, Wei FANG1, and Limin TONG1
Author Affiliations
  • 1State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
  • 2College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, China
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    DOI: 10.1007/s13320-017-0369-5 Cite this Article
    Lei ZHANG, Zhang ZHANG, Yichuan WANG, Meiying YE, Wei FANG, Limin TONG. Optofluidic Refractive Index Sensor Based on Partial Reflection[J]. Photonic Sensors, 2017, 7(2): 97 Copy Citation Text show less

    Abstract

    We demonstrate a novel optofluidic refractive index (RI) sensor with high sensitivity and wide dynamic range based on partial reflection. Benefited from the divergent incident light and the output fibers with different tilting angles, we have achieved highly sensitive RI sensing in a wide range from 1.33 to 1.37. To investigate the effectiveness of this sensor, we perform a measurement of RI with a resolution of ca. 5.0×10-5 refractive index unit (RIU) for ethylene glycol solutions. Also, we have measured a series of liquid solutions by using different output fibers, achieving a resolution of ca. 0.52 mg/mL for cane surge. The optofluidic RI sensor takes advantage of the high sensitivity, wide dynamic range, small footprint, and low sample consumption, as well as the efficient fluidic sample delivery, making it useful for applications in the food industry.
    Lei ZHANG, Zhang ZHANG, Yichuan WANG, Meiying YE, Wei FANG, Limin TONG. Optofluidic Refractive Index Sensor Based on Partial Reflection[J]. Photonic Sensors, 2017, 7(2): 97
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