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24 October 2017 Fiber optic refractive index sensor using optofluidic anti-resonant reflecting guidance
Ran Gao, Danfeng Lu, Jin Cheng, Zhi-mei Qi
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Proceedings Volume 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications; 104640N (2017) https://doi.org/10.1117/12.2284588
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
An optofluidic anti-resonant reflecting guidance has been proposed and experimental demonstrated for the measurement of liquid refractive index. Two micro-channels were fabricated for the delivery of the liquid sample in the hollow core photonic crystal fiber by using femtosecond laser micromachining, serving as an inlet and outlet. The refractive index can be detected by using the resonant condition of the Fabry-Perot resonator, which is interrogated through the wavelength shift and of the lossy dip in the transmission spectrum. The experimental results show that the sensitivity of up to 1328 nm/RIU is achieved for the refractive index in the range from 1.345 to 1.363 RIU, respectively. The proposed sensor appears to have potential applications of precise measurement in chemistry, medicine, and biology.
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Ran Gao, Danfeng Lu, Jin Cheng, and Zhi-mei Qi "Fiber optic refractive index sensor using optofluidic anti-resonant reflecting guidance", Proc. SPIE 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications, 104640N (24 October 2017); https://doi.org/10.1117/12.2284588
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KEYWORDS
Fiber optics sensors
Fiber optics
Photonic crystal fibers
Refractive index
Sensors
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