Broadband Light Source at 1.7 μm Based on Cascaded-Modulator Pumping

Di Wu; Peng Zhang; Xiaoyan Li; Dashuai Wang; Zhenxing He; Xinmeng Zhang; Junda Chen; Tianshu Wang; Lizhong Zhang; Shoufeng Tong

doi:10.3788/CJL201946.0506003

Chinese Journal of Lasers, Volume. 46, Issue 5, 0506003(2019)

Broadband Light Source at 1.7 μm Based on Cascaded-Modulator Pumping

Di Wu^1,2, Peng Zhang^1,2、*, Xiaoyan Li^1,2, Dashuai Wang^1,3, Zhenxing He², Xinmeng Zhang², Junda Chen², Tianshu Wang^1,2, Lizhong Zhang^1,2, and Shoufeng Tong^1,2

Author Affiliations

¹National and Local Joint Engineering Research Center of Space Optoelectronics Technology,Changchun University of Science and Technology, Changchun, Jilin 130022, China

²College of Optoelectronics Engineering, Changchun University of Science and Technology,Changchun, Jilin 130022, China

³College of Electronical and Information Engineering, Changchun University of Science and Technology,Changchun, Jilin 130022, China

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Fig. 1. Experimental design of broadband light source at 1.7 μm

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Fig. 2. Generation principle of pulse sequence based on cascaded-modulator

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Fig. 3. Output signal after IM1

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Fig. 4. Output signal after cascaded-modulator

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Fig. 5. Spectra after HNL-DSF under different output powers

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Fig. 6. Spectra after HNL-DSF under different wavelengths

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Fig. 7. Waveform of output signal after HNL-DSF

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Fig. 8. Spectrum after WDM filtering

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Fig. 9. Results after Sagnac filtering. (a) Broadband spectrum; (b) spectral detail map

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Fig. 10. Output signal of broadband light source

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Fig. 11. Spectra under different repetition rates. (a) After HNL-DSF; (b) after Sagnac ring

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Fig. 12. Power fluctuation of multi-wavelength laser output

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Table 1. Output characteristics under different pump wavelengths
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Table 1. Output characteristics under different pump wavelengths
Pump wavelengthλ /nm Averagepower $\begin{matrix} \bar{P} \end{matrix}$ /W Peak powerP₀ /W Pulse widthτ /ps
1545 1.57 115 68
1550 1.63 125 65
1565 1.75 136 63
1575 1.34 97 69

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Di Wu, Peng Zhang, Xiaoyan Li, Dashuai Wang, Zhenxing He, Xinmeng Zhang, Junda Chen, Tianshu Wang, Lizhong Zhang, Shoufeng Tong. Broadband Light Source at 1.7 μm Based on Cascaded-Modulator Pumping[J]. Chinese Journal of Lasers, 2019, 46(5): 0506003

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