Name
Title | ||
|---|---|---|
A Refractive Index Sensor Based on H-Shaped Photonic Crystal Fibers Coated with Ag-Graphene Layers. |
Abstract | ||
|---|---|---|
An Ag-graphene layers-coated H-shaped photonic crystal fiber (PCF) surface plasmon resonance (SPR) sensor with a U-shaped grooves open structure for refractive index (RI) sensing is proposed and numerically simulated by the finite element method (FEM). The designed sensor could solve the problems of air-holes material coating and analyte filling in PCF. Two big air-holes in the x-axis produce a birefringence phenomenon leading to the confinement loss and sensitivity of x-polarized light being much stronger than y-polarized. Graphene is deposited on the layer of silver in the grooves; its high surface to volume ratio and rich pi conjugation make it a suitable dielectric layer for sensing. The effect of structure parameters such as air-holes size, U-shaped grooves depth, thickness of the silver layer and number of graphene layers on the sensing performance of the proposed sensor are numerical simulated. A large analyte RI range from 1.33 to 1.41 is calculated and the highest wavelength sensitivity is 12,600 nm/RIU. In the linear RI sensing region of 1.33 to 1.36; the average wavelength sensitivity we obtained can reach 2770 nm/RIU with a resolution of 3.61 x 10(-5) RIU. This work provides a reference for developing a high-sensitivity; multi-parameter measurement sensor potentially useful for water pollution monitoring and biosensing in the future. |
Year | DOI | Venue |
|---|---|---|
2020 | 10.3390/s20030741 | SENSORS |
Keywords | Field | DocType |
photonic crystal fibers,surface plasmon resonance,H-shaped optical fiber,liquid refractive index,graphene | Analytical chemistry,Surface plasmon resonance,Graphene,Photonic-crystal fiber,Birefringence,Biosensor,Engineering,Surface-area-to-volume ratio,Optoelectronics,Wavelength,Refractive index | Journal |
Volume | Issue | ISSN |
20 | 3.0 | 1424-8220 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Tianshu Li | 1 | 0 | 0.68 |
| Lianqing Zhu | 2 | 3 | 5.13 |
| Xianchao Yang | 3 | 0 | 0.34 |
| Xiaoping Lou | 4 | 0 | 2.03 |
| Liandong Yu | 5 | 0 | 1.69 |