中国物理B ›› 2018, Vol. 27 ›› Issue (5): 54102-054102.doi: 10.1088/1674-1056/27/5/054102

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

Confinement of Bloch surface waves in a graphene-based one-dimensional photonic crystal and sensing applications

Xiu-Juan Zou(邹秀娟), Gai-Ge Zheng(郑改革), Yun-Yun Chen(陈云云)   

  1. 1 Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    2 School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    3 Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology(CICAEET), Nanjing University of Information Science & Technology, Nanjing 210044, China
  • 收稿日期:2017-12-01 修回日期:2018-01-10 出版日期:2018-05-05 发布日期:2018-05-05
  • 通讯作者: Gai-Ge Zheng E-mail:jsnanophotonics@yahoo.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos.61203211 and 41675154),the Six Major Talent Peak Expert of Jiangsu Province,China (Grant No.2015-XXRJ-014),and the Natural Science Foundation of Jiangsu Province,China (Grant No.BK20141483).

Confinement of Bloch surface waves in a graphene-based one-dimensional photonic crystal and sensing applications

Xiu-Juan Zou(邹秀娟)1,2, Gai-Ge Zheng(郑改革)1,2,3, Yun-Yun Chen(陈云云)1,2,3   

  1. 1 Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    2 School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    3 Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology(CICAEET), Nanjing University of Information Science & Technology, Nanjing 210044, China
  • Received:2017-12-01 Revised:2018-01-10 Online:2018-05-05 Published:2018-05-05
  • Contact: Gai-Ge Zheng E-mail:jsnanophotonics@yahoo.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos.61203211 and 41675154),the Six Major Talent Peak Expert of Jiangsu Province,China (Grant No.2015-XXRJ-014),and the Natural Science Foundation of Jiangsu Province,China (Grant No.BK20141483).

摘要: Bloch surface waves (BSWs) are excited in one-dimensional photonic crystals (PhCs) terminated by a graphene monolayer under the Kretschmann configuration. The field distribution and reflectance spectra are numerically calculated by the transverse magnetic method under transfer-matrix polarization, while the sensitivity is analyzed and compared with those of the surface plasmon resonance sensing method. It is found that the intensity of magnetic field is considerably enhanced in the region of the terminated layer of the multilayer stacks, and that BSW resonance appears only in the interface of the graphene and solution. Influences of the graphene layers and the thickness of a unit cell in PhCs on the reflectance are studied as well. In particular, by analyzing the performance of BSW sensors with the graphene monolayer, the wavelength sensitivity of the proposed sensor is 1040 nm/RIU whereas the angular sensitivity is 25.1°/RIU. In addition, the maximum of figure of merit can reach as high as 3000 RIU-1. Thus, by integrating graphene in a simple Kretschmann structure, one can obtain an enhancement of the light-graphene interaction, which is prospective for creating label-free, low-cost and high-sensitivity optical biosensors.

关键词: optical sensor, Bloch surface wave (BSW), photonic crystal (PhC)

Abstract: Bloch surface waves (BSWs) are excited in one-dimensional photonic crystals (PhCs) terminated by a graphene monolayer under the Kretschmann configuration. The field distribution and reflectance spectra are numerically calculated by the transverse magnetic method under transfer-matrix polarization, while the sensitivity is analyzed and compared with those of the surface plasmon resonance sensing method. It is found that the intensity of magnetic field is considerably enhanced in the region of the terminated layer of the multilayer stacks, and that BSW resonance appears only in the interface of the graphene and solution. Influences of the graphene layers and the thickness of a unit cell in PhCs on the reflectance are studied as well. In particular, by analyzing the performance of BSW sensors with the graphene monolayer, the wavelength sensitivity of the proposed sensor is 1040 nm/RIU whereas the angular sensitivity is 25.1°/RIU. In addition, the maximum of figure of merit can reach as high as 3000 RIU-1. Thus, by integrating graphene in a simple Kretschmann structure, one can obtain an enhancement of the light-graphene interaction, which is prospective for creating label-free, low-cost and high-sensitivity optical biosensors.

Key words: optical sensor, Bloch surface wave (BSW), photonic crystal (PhC)

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials)