Zhecan Guo, Fang Xie, Xiaolei Guo, Xiaoyuan Zhang. Multi-Wavelength and Narrow Linewidth Fiber Laser Based on Composite Resonator[J]. Laser & Optoelectronics Progress, 2022, 59(17): 1714008

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- Laser & Optoelectronics Progress
- Vol. 59, Issue 17, 1714008 (2022)

Fig. 1. Principle of dual-wavelength narrow linewidth fiber laser

Fig. 2. Principle of the frequency selection of composite resonator

Fig. 3. Principle of three-wavelength narrow linewidth fiber laser

Fig. 4. Spectrum of dual-wavelength narrow linewidth laser

Fig. 5. Pump/laser power of one wavelength of dual-wavelength narrow linewidth fiber laser

Fig. 6. Measurement principle of output power of dual-wavelength narrow linewidth fiber laser

Fig. 7. Output power of two wavelengths

Fig. 8. Principle of the heterodyne interferometric experiments. (a) Schematic diagram of the interference experiment system; (b) actual photo of the interference experiment system

Fig. 9. Heterodyne interferometric signal when the light source is multi-longitudinal mode and single-longitudinal mode laser. (a) Multi-longitudinal mode heterodyne interference signal; (b) single longitudinal mode heterodyne interference signal

Fig. 10. Heterodyne interferometric signal of any wavelength of dual-wavelength laser

Fig. 11. Spectrum of three-wavelength narrow linewidth laser

Fig. 12. Pump/laser power of one wavelength of three-wavelength narrow linewidth fiber laser

Fig. 13. Principle of power measurement for three wavelengths

Fig. 14. Output power of three wavelengths

Fig. 15. Heterodyne interference signal of any wavelength of three-wavelength laser
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Table 1. Grating parameters of dual-wavelength narrow linewidth fiber laser
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Table 2. Length of L11–L22 in dual-wavelength narrow linewidth fiber laser
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Table 3. Parameters of three-wavelength narrow linewidth fiber laser
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Table 4. Length of L11–L32 in three-wavelength narrow linewidth fiber laser

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