Jia-min GONG, Yu-rong ZHANG, Jun-hua XU, Ning TIAN, Jun-jie MAO, Jia-man HE, Yu-tian XU, Xiao-lei YOU. Research on Gain Characteristics of Second-order Raman Fiber Amplifier[J]. Acta Photonica Sinica, 2020, 49(8): 0806001
- Acta Photonica Sinica
- Vol. 49, Issue 8, 0806001 (2020)
Fig. 1. Structure of second-order Raman fiber amplifier
Fig. 2. Flow chart of particle swarm optimization algorithm
Fig. 3. Output gain of six groups of optimized results
Fig. 4. Output gain under the F set of parameters
Fig. 5. The noise gain of first order RFA and second order RFA
Fig. 6. The powers of pumped lights vary with the fiber length
Fig. 7. The powers of 100-channel signal lights vary with the fiber length
Fig. 8. Variation of average gain and gain flatness with fiber length
Fig. 9. Variation of average gain and gain flatness with pumped light power
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Table 1. Basic optimization parameters
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Table 2. Second order RFA optimization interval setting
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Table 3. Comparison of six groups of optimization results
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