Laser & Optoelectronics Progress, Volume. 55, Issue 3, 030602(2018)
Central Wavelength Interrogation Method of Ultra-Short FBG by Dual-Wavelength Laser
Fig. 1. Reflective of FBGs. (a) Different grating lengths; (b) different refractive index modulation depths
Fig. 2. Schematic of interrogation by single-wavelength laser
Fig. 3. Schematic of interrogation by dual-wavelength laser
Fig. 4. Schematic of interrogation experimental setup by dual-wavelength laser
Fig. 5. Reflection spectra of US-FBG. (a) Different kinds of fibers; (b) different lengths of grating region
Fig. 6. Analysis of linearization data on both sides of US-FBG reflection spectra
Fig. 7. (a) Relationship between P1 and the central wavelength of US-FBG; (b) relationship between P2 and the central wavelength of US-FBG
Fig. 8. Experimental results and theoretical values of US-FBG central wavelength
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Kai Li, Jingtao Xin, Fei Luo, Xiaoping Lou, Lianqing Zhu. Central Wavelength Interrogation Method of Ultra-Short FBG by Dual-Wavelength Laser[J]. Laser & Optoelectronics Progress, 2018, 55(3): 030602
Category: Fiber Optics and Optical Communications
Received: Aug. 25, 2017
Accepted: --
Published Online: Sep. 10, 2018
The Author Email: Zhu Lianqing (zhulianqing@sina.com)