期刊
OPTICS EXPRESS
卷 20, 期 6, 页码 5974-5986出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.005974
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资金
- International Cooperation Project between China [2009DFA12640]
- Huazhong University of Science and Technology [0124182015]
- International Cooperation Project between Singapore [2009DFA12640]
We present and numerically characterize a closed-form multi-core holey fiber based plasmonic sensor. The coupling properties of the specific modes are investigated comprehensively by the finite element method. It is found that not only phase matching but also loss matching plays a key role in the coupling process between the fundamental mode and plasmonic mode. The coupling transforms from incomplete coupling to complete coupling with increasing analyte RI. An average sensitivity of 2929.39nm/RIU in the sensing range 1.33-1.42, and 9231.27nm/RIU in 1.43-1.53 with high linearity is obtained. The dynamic sensing range is the largest among the reported holey fiber based plasmonic sensors, to the best of our knowledge. (c) 2012 Optical Society of America
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