Dongyang Zhang, Lei Zhao, Xiangxian Wang, Ru Wang, Zhiyuan Pang, Hua Yang, Wangjun Feng. A Refractive Index Sensor Based on Composite Structure of Dielectric Grating with Metal Films[J]. Acta Optica Sinica, 2017, 37(11): 1124001
- Acta Optica Sinica
- Vol. 37, Issue 11, 1124001 (2017)
Fig. 1. Schematic of refractive index sensor based on composite structure of dielectric grating with metal films
Fig. 2. (a) Reflection spectra and (b) their corresponding enlarged partial views under different grating thicknesses when analyte refractive index is 1.3317 and grating period is 300 nm
Fig. 3. Reflection spectra under different grating periods when analyte refractive index is 1.3317 and grating thickness is 100 nm
Fig. 4. Reflection spectra of analytes with different refractive indexes
Fig. 5. Electric-field distributions of metal films under different resonance angles. (a) Interface between metal films and analyte; (b) interface between metal films and grating
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