Chenyu Guo, Doudou Wang, Changlong Mu. Progress on Optical Fiber Sensors Based on Graphene/Graphene Oxide[J]. Laser & Optoelectronics Progress, 2020, 57(15): 150003
- Laser & Optoelectronics Progress
- Vol. 57, Issue 15, 150003 (2020)
![Basic properties of graphene materials. (a) Diagram of graphene structure[20]; (b) three-dimensional energy band structure of graphene[21]; (c) diagram of change in energy band structure induced by applying a perpendicular electric field in bilayer graphene. The dotted and solid curves indicate the band structure without and with strong perpendicular electric field, respectively[<xref ref-typ](/Images/highlights-null.jpg)
Fig. 1. Basic properties of graphene materials. (a) Diagram of graphene structure[20]; (b) three-dimensional energy band structure of graphene[21]; (c) diagram of change in energy band structure induced by applying a perpendicular electric field in bilayer graphene. The dotted and solid curves indicate the band structure without and with strong perpendicular electric field, respectively[![Basic components of optical fiber sensor[37]](/Images/icon/loading.gif)
Fig. 2. Surface oxidation of graphite and structural model of GO. (a) Surface oxidation of graphite[26]; (b) structural model of GO[31]
Fig. 3. Basic components of optical fiber sensor[37]
Fig. 4. Structure of graphene covered MNF[39]
Fig. 5. Graphene-based current sensor with MNF coil resonator[43]. (a) Diagram of graphene-based current sensor. The pale yellow thin sheets coated around both ends of the graphene sheet are Au electrodes. Inset shows micrograph of microfiber with diameter of ~4.5 μm; (b) photo of graphene-microfiber-integrated coil resonator
Fig. 6. Cross-sectional diagram of graphene/PCF hybrid waveguides. (a) Cross-sectional diagram of graphene/Ag-PCF SPR sensor[50]; (b)cross-sectional diagram of Cu/graphene coated PCF sensor[51]
Fig. 7. Diagram of MZI structure[53]
Fig. 8. Two-dimensional cross section of graphene coated D-PCF hybrid waveguides. (a) Schematic diagram of PCF coated with silver and graphene[56]; (b) two-dimensional cross section of D-type PCF-SPR sensing structure[59]
Fig. 9. Electromagnetic field excitation process of SPR and LSPR. (a) Schematic of electromagnetic field of TM wave in metal-dielectric interface; (b) schematic of local surface plasmon excitation[64]
Fig. 10. Schematic diagram of PCF sensor[69]
Fig. 11. Structural schematic of graphene-coated microfiber Bragg grating[73]
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