Haoran Zhang, Ciming Zhou, Dian Fan, Ai Zhou, Yujia Zhao. Fiber Cavity Ring-Down Refractive Index Sensing Method Based on Frequency-Shifted Interferometry[J]. Laser & Optoelectronics Progress, 2019, 56(17): 170627
- Laser & Optoelectronics Progress
- Vol. 56, Issue 17, 170627 (2019)
Fig. 1. Experimental setup for FSI-CRD sensing
Fig. 2. Schematic of fiber taper
Fig. 3. Microscopic images of fiber taper. (a) Front section; (b)-(e) middle section; (f) tail section
Fig. 4. Initial decay curve with the taper immersed in deionized water
Fig. 5. Transient cavity loss with the taper immersed in deionized water followed by the additions of glucose solutions
Fig. 6. Fitting curves of the ring-down spectrum peak points under different concentration. (a) Glucose; (b) NaCl
Fig. 7. Relationship between the cavity loss and concentration. (a) Glucose; (b) NaCl
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