• Optical Instruments
  • Vol. 44, Issue 1, 87 (2022)
Bing TAN and Bin CAI*
Author Affiliations
  • School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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    DOI: 10.3969/j.issn.1005-5630.2022.01.013 Cite this Article
    Bing TAN, Bin CAI. Preparation of high-refractive-index film coated polymer waveguide fiber sensor[J]. Optical Instruments, 2022, 44(1): 87 Copy Citation Text show less
    The set-up for polymer waveguide fabrication
    Fig. 1. The set-up for polymer waveguide fabrication
    SEM image of fiber-waveguide-fiber
    Fig. 2. SEM image of fiber-waveguide-fiber
    Cross section of polymer waveguide
    Fig. 3. Cross section of polymer waveguide
    Electric field intensity distribution of waveguide
    Fig. 4. Electric field intensity distribution of waveguide
    Relative intensity as a function of Ta2O5 thickness
    Fig. 5. Relative intensity as a function of Ta2O5 thickness
    The sensor set-up for absorption measurement
    Fig. 6. The sensor set-up for absorption measurement
    Absorption spectra at 1×10−6 g/mL concentration
    Fig. 7. Absorption spectra at 1×10−6 g/mL concentration
    序号名称表达式描述
    1λ0/nm 532入射波长
    2λ/nm λ0/n1材料中波长
    3f0c_const/λ0入射频率
    4n21.33包层(水)折射率
    5n11.48聚合物波导折射率
    6r1/nm 10000波导半径
    7r2/nm 15000包层半径
    8n32.00Ta2O5折射率
    9r3/nm r1+δ镀膜层半径
    Table 1. Parameters of optical waveguide