Chenhui Huang, Li Qin, Hao Liang, Linghao Cheng. Brillouin Refractive Index Sensing Technique Based on Micro-Nano Fiber[J]. Laser & Optoelectronics Progress, 2019, 56(17): 170626
- Laser & Optoelectronics Progress
- Vol. 56, Issue 17, 170626 (2019)
Fig. 1. Relationship between effective refractive index of micro-nano fibers and external refractive index with different diameters
Fig. 2. Brillouin frequency shift of 2 μm micro-nano fiber versus external refractive index
Fig. 3. Experimental system diagram
Fig. 4. Brillouin scattering peaks in single mode fiber and micro-nano fiber
Fig. 5. Frequency shifts of Brillouin peaks at different refractive indexes. (a) Brillouin frequency shift of peak a; (b) Brillouin frequency shift of peak b
Fig. 6. Linear fitting of Brillouin frequency shift related to refractive index
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