中国物理B ›› 2013, Vol. 22 ›› Issue (7): 74213-074213.doi: 10.1088/1674-1056/22/7/074213

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Numerical analysis of a photonic crystal fiber based on two polarized modes for biosensing applications

秦伟, 李曙光, 薛建荣, 辛旭军, 张磊   

  1. Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China
  • 收稿日期:2012-12-21 修回日期:2013-01-07 出版日期:2013-06-01 发布日期:2013-06-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61178026 and 60978028), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20091333110010), and the Natural Science Foundation of Hebei Province, China (Grant No. E2012203035).

Numerical analysis of a photonic crystal fiber based on two polarized modes for biosensing applications

Qin Wei (秦伟), Li Shu-Guang (李曙光), Xue Jian-Rong (薛建荣), Xin Xu-Jun (辛旭军), Zhang Lei (张磊)   

  1. Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China
  • Received:2012-12-21 Revised:2013-01-07 Online:2013-06-01 Published:2013-06-01
  • Contact: Li Shu-Guang E-mail:shuguangli@ysu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61178026 and 60978028), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20091333110010), and the Natural Science Foundation of Hebei Province, China (Grant No. E2012203035).

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摘要： This paper presents a theoretical study on a photonic crystal fiber plasmonic refractive index biosensor. The proposed photonic crystal fiber sensor introduces the concept of simultaneous detection with the linearly polarized and radially polarized modes because the sensing performance of the sensor based on both modes is relatively high, which will be useful for selecting the modes to make the detection accurately. The sharp single resonant peaks of linearly polarized mode and radially polarized mode, which are stronger and more sensitive to the variation of analyte refractive index than that of any other polarized mode in this kind of photonic crystal fiber. For linearly polarized mode and radially polarized mode, the maximum sensitivities of 10448.5 nm per refractive index unit and 8230.7 nm per refractive index unit can be obtained, as well as 949.8 and 791.4 for figure of merits in the sensing range of 1.33-1.45, respectively. Compared with the conventional Au-metalized surface plasmon resonance sensors, our device is better and can be applied as a biosensor.

关键词: photonic crystal fiber, sensors, surface plasmon

Abstract: This paper presents a theoretical study on a photonic crystal fiber plasmonic refractive index biosensor. The proposed photonic crystal fiber sensor introduces the concept of simultaneous detection with the linearly polarized and radially polarized modes because the sensing performance of the sensor based on both modes is relatively high, which will be useful for selecting the modes to make the detection accurately. The sharp single resonant peaks of linearly polarized mode and radially polarized mode, which are stronger and more sensitive to the variation of analyte refractive index than that of any other polarized mode in this kind of photonic crystal fiber. For linearly polarized mode and radially polarized mode, the maximum sensitivities of 10448.5 nm per refractive index unit and 8230.7 nm per refractive index unit can be obtained, as well as 949.8 and 791.4 for figure of merits in the sensing range of 1.33-1.45, respectively. Compared with the conventional Au-metalized surface plasmon resonance sensors, our device is better and can be applied as a biosensor.

Key words: photonic crystal fiber, sensors, surface plasmon

中图分类号:  (Fiber optics)

  • 42.81.-i
42.81.Pa (Sensors, gyros) 71.45.Gm (Exchange, correlation, dielectric and magnetic response functions, plasmons)