Xiao Pingping, Wang Fei, Deng Manlan. Nanometer Gap Measurement Based on Metal-Cladding Waveguide Configurations[J]. Laser & Optoelectronics Progress, 2020, 57(21): 212302
- Laser & Optoelectronics Progress
- Vol. 57, Issue 21, 212302 (2020)
Fig. 1. Schematic of sensing structure
Fig. 2. Relationship between κ0h0 and effective refractive index for symmetrical metal-cladding waveguide structure
Fig. 3. Relation between reflectivity and incident angle under different air gap thicknesses without organic film
Fig. 4. Simulated R-θ curves when air gap thickness is 0 nm and 100 nm, respectively
Fig. 5. Relationship between air gap thickness and corresponding resonance angle
Fig. 6. Relationship between air gap thickness in the range of 0--10 nm with corresponding resonance angle
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