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20 December 2013 Optical fibers as a unique platform for RS/SERS molecular detection
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Proceedings Volume 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 904402 (2013) https://doi.org/10.1117/12.2035913
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China
Abstract
There is a growing interest in developing compact and reliable sensors for molecular detection. Raman spectroscopy (RS) has the advantage of molecular specificity compared to other sensing techniques but lacks the required sensitivity. The development of surface enhanced Raman scattering (SERS) technologies has provided a solution to the sensitivity problem. In addition, the application of optical fibers, in conjunction with RS and SERS, has proved to be a unique platform for remote sensing, system integration, and further sensitivity enhancement. In this paper, we review our recent work on two types of optical fiber sensors for enhanced Raman gas detections. One is the hollow-core photonic crystal fiber (HCPCF) sensor utilizing the increased interaction volume by the light confinement inside the HCPCF. The other is the nanostructured optical fiber sensor, in which a multimode fiber facet is patterned with an array of metal-coated nanopillars, leading to surface-enhanced Raman scattering (SERS) that significantly increases the sensitivity. We demonstrate that these techniques can be well applied in the in-situ remote detection of organic vapors and explosives.
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Xuan Yang, Tiziana C. Bond, and Claire Gu "Optical fibers as a unique platform for RS/SERS molecular detection", Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 904402 (20 December 2013); https://doi.org/10.1117/12.2035913
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