Application of Bi-Directionally Pumped Raman Amplifier in 100 Gbit·s
            <sup>-1</sup> Ultra-Long Distance Transmission System

Ronghua Chi; Yuan Yuan; Fei Wang; Tao Lü; Xiaohan Sun

doi:10.3788/LOP56.060601

Laser & Optoelectronics Progress, Volume. 56, Issue 6, 060601(2019)

Application of Bi-Directionally Pumped Raman Amplifier in 100 Gbit·s ^-1 Ultra-Long Distance Transmission System

Ronghua Chi^1,2,3, Yuan Yuan³, Fei Wang³, Tao Lü², and Xiaohan Sun^2、*

¹ School of Internet of Things and Software Technology, Wuxi Vocational College of Science and Technology, Wuxi, Jiangsu 214068, China

² National Research Center for Optical Sensing/Communications Integrated Networking, Southeast University Science Park, Nanjing, Jiangsu 210096, China

³ Wuxi Taclink Optoelectronics Technology Co., Ltd., Wuxi, Jiangsu 214068, China

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Figures & Tables(6)

Fig. 1. Structrual diagram of transmmission system

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Fig. 2. Performance comparison between backward pumped Raman amplifier and bi-directionally pumped amplifier

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Fig. 3. OSNR of system for span losses of 61 dB and 68 dB

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Fig. 4. Evolutions of pump power and signal power in fiber link

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Table 1. Parameters of system equipment

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Table 1. Parameters of system equipment

No.	Parameter	Value
1	Signalrate /(Gbit·s^-1)	100
2	Span length /km	295
3	Fiber loss /dB	67.85
4	Margin /dB	1
5	Total loss /dB	68.85
8	Minimum power /dBm	-3
9	Receiver sensitivity /dBm	-11
10	Maximum BA power /dBm	27
11	Forward Raman gain /dB	7
12	Backward Raman gain /dB	25

Table 2. Performance factors and costs of system under different amplifier combination schemes
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Table 2. Performance factors and costs of system under different amplifier combination schemes
Scheme Amplifierconfiguration Powerbudget /dB Cost /USD
A BA+CORA+CTRA+PA 68.85 5200
B BA+ROPA+PA 72 4500
C BA+CTRA+ROPA+PA 73.5 6100
D BA+CORA+ROPA+PA 77.5 6100

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Ronghua Chi, Yuan Yuan, Fei Wang, Tao Lü, Xiaohan Sun. Application of Bi-Directionally Pumped Raman Amplifier in 100 Gbit·s ^-1 Ultra-Long Distance Transmission System [J]. Laser & Optoelectronics Progress, 2019, 56(6): 060601

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