中国物理B ›› 2017, Vol. 26 ›› Issue (10): 104211-104211.doi: 10.1088/1674-1056/26/10/104211

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

Surface plasmon resonance-induced tunable polarization filters based on nanoscale gold film-coated photonic crystal fibers

Yingchao Liu(刘英超), Hailiang Chen(陈海良), Shuguang Li(李曙光), Qiang Liu(刘强), Jianshe Li(李建设)   

  1. Hebei Key Laboratory of Microstructure Materials Physics, College of Science, Yanshan University, Qinhuangdao 066004, China
  • 收稿日期:2017-03-11 修回日期:2017-05-31 出版日期:2017-10-05 发布日期:2017-10-05
  • 通讯作者: Hailiang Chen E-mail:hlchen@ysu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61505175 and 61475134) and the Natural Science Foundation of Hebei Province, China (Grant Nos. F2017203110 and F2017203193).

Surface plasmon resonance-induced tunable polarization filters based on nanoscale gold film-coated photonic crystal fibers

Yingchao Liu(刘英超), Hailiang Chen(陈海良), Shuguang Li(李曙光), Qiang Liu(刘强), Jianshe Li(李建设)   

  1. Hebei Key Laboratory of Microstructure Materials Physics, College of Science, Yanshan University, Qinhuangdao 066004, China
  • Received:2017-03-11 Revised:2017-05-31 Online:2017-10-05 Published:2017-10-05
  • Contact: Hailiang Chen E-mail:hlchen@ysu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61505175 and 61475134) and the Natural Science Foundation of Hebei Province, China (Grant Nos. F2017203110 and F2017203193).

摘要: Surface plasmon resonance induced tunable polarization filters based on nanoscale gold film-coated photonic crystal fibers were proposed and analyzed. The characteristics of the polarization filter were calculated by finite element method (FEM). The gold film was selectively coated on the inner wall of one cladding air hole which was located near the fiber core along the y-axis direction. When the phase of core fundamental mode and surface plasmon polaritons (SPPs) mode matches, the two modes couple with each other intensely. Numerical results show that the resonance wavelength and strength vary with fiber structural parameters and the index of the infilling liquid. The fiber parameters were optimized to achieve specific functions. Under the optimal structure, we realized a dual channel filter at the communication wavelength of 1.31 μm and 1.55 μm for y polarization direction and x polarization direction. Then a single channel polarized filter at the communication wavelength of 1.55 μm is also achieved by adjusting the refractive index of the infilling liquid. The proposed polarization filters realized dual channel filtering and single channel filtering simultaneously under the same structure for the first time to the best of our knowledge.

关键词: photonic crystal fibers, polarized filter

Abstract: Surface plasmon resonance induced tunable polarization filters based on nanoscale gold film-coated photonic crystal fibers were proposed and analyzed. The characteristics of the polarization filter were calculated by finite element method (FEM). The gold film was selectively coated on the inner wall of one cladding air hole which was located near the fiber core along the y-axis direction. When the phase of core fundamental mode and surface plasmon polaritons (SPPs) mode matches, the two modes couple with each other intensely. Numerical results show that the resonance wavelength and strength vary with fiber structural parameters and the index of the infilling liquid. The fiber parameters were optimized to achieve specific functions. Under the optimal structure, we realized a dual channel filter at the communication wavelength of 1.31 μm and 1.55 μm for y polarization direction and x polarization direction. Then a single channel polarized filter at the communication wavelength of 1.55 μm is also achieved by adjusting the refractive index of the infilling liquid. The proposed polarization filters realized dual channel filtering and single channel filtering simultaneously under the same structure for the first time to the best of our knowledge.

Key words: photonic crystal fibers, polarized filter

中图分类号:  (Optical waveguides and couplers)

  • 42.79.Gn
42.79.Ci (Filters, zone plates, and polarizers)