Economic Modeling and Fast Planning Algorithm of Undersea Optical Cable System

Wenjing GAO; Guanjun GAO

doi:10.13756/j.gtxyj.2024.230072

Journals >Study On Optical Communications >Volume 50 >Issue 3 >Page 23007201 > Article

Study On Optical Communications
Vol. 50, Issue 3, 23007201 (2024)

Economic Modeling and Fast Planning Algorithm of Undersea Optical Cable System

Wenjing GAO and Guanjun GAO^*

Author Affiliations

National Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China

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DOI: 10.13756/j.gtxyj.2024.230072 Cite this Article

Wenjing GAO, Guanjun GAO. Economic Modeling and Fast Planning Algorithm of Undersea Optical Cable System[J]. Study On Optical Communications, 2024, 50(3): 23007201 Copy Citation Text

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Fig. 1. The process of cascade genetics-lexicographic order algorithm

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Fig. 2. The iterative result of genetic algorithm when span distance=6 000 km and transmission capacity=100 Tbit/s

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Fig. 3. The calculation times of the two algorithms under different longest span

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Fig. 4. The optimal cost of submarine cable communication system at different span distances

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参数名称	参数值
每公里敷设成本	0.7
每公里海缆成本（LW，光单元外径为2.65 mm）	0.2
每公里光纤成本（PSCF110）	0.005
中继器-光放大器成本	2
中继器-核心结构件	18
100 Gbit/s相干收发机成本	1

Table 1. System cost parameter

光单元外径/mm	LW	SA	DA
2.65（N_fp≤12）	1.000	1.344	2.025
3.70（N_fp≤30）	1.042	1.410	2.117
4.40（N_fp>30）	1.078	1.446	2.179

Table 2. Submarine cable cost parameter

光纤类型	成本	衰减系数(dB/km)	非线性系数(1/W/km)	色散系数(ps/km/nm)	有效面积/μm²
SSMF	1.0	0.185	1.31	18.0	80
PSCF110	5.0	0.160	0.81	20.5	110
PSCF130	7.5	0.162	0.68	20.5	130
PSCF150	10.0	0.154	0.59	20.8	150

Table 3. Optical fiber cost parameter

参数名称	参数值
跨段距离Lspan/km	[40，120]
中继器光功率	[16，22]
调制格式	QPSK，8QAM，16QAM，32QAM，64QAM
光纤对数	[1，32]
符号速率/Gbaud	30
波长数	[1，80]
放大器噪声指数/dB	5
光电转换效率η	1.5%
控制电路ε	10%
海缆电阻/Ω/km	1
Qlimit	6

Table 4. System parameter

传输距离/km	供电电压/kV	全遍历法				级联遗传-字典序法				C（%）
传输距离/km	供电电压/kV	CT	QBOL	QEOL	实际容量/Tbit/s	CG	QBOL	QEOL	实际容量/Tbit/s	C（%）
6 000	15	13 384.6	8.375	7.164	100.80	13 384.6	8.375	7.164	100.80	0
8 000	15	17 618.8	8.118	7.053	100.80	17 618.8	8.118	7.053	100.80	0
10 000	15	22 645.0	8.043	7.076	100.80	22 645.0	8.043	7.076	100.80	0
12 000	30	26 697.2	8.054	7.075	100.80	26 697.2	8.054	7.075	100.80	0
14 000	30	30 963.8	8.640	7.416	100.32	30 963.8	8.640	7.416	100.32	0
16 000	30	36 190.0	8.186	7.104	100.32	36 314.0	8.281	7.211	100.32	0.34

Table 5. Comparison of planning results of submarine cable system with transmission capacity of 100 Tbit/s and transmission distance of 6 000～16 000 km

传输距离/km	供电电压/kV	跨段距离/km	光纤类型	光纤对数	调制格式	信道数	中继器功率/dBm
6 000	15	118	PSCF110	7	8QAM	80	20
8 000	15	104	PSCF110	7	8QAM	80	19
10 000	15	96	PSCF150	7	8QAM	80	17
12 000	30	97	PSCF150	7	8QAM	80	19
14 000	30	120	PSCF110	11	QPSK	76	19
16 000	30	106	PSCF110	11	QPSK	76	17

Table 6. The planning scheme of the total traversal algorithm

传输距离/km	供电电压/kV	跨段距离/km	光纤类型	光纤对数	调制格式	信道数	中继器功率/dBm
6 000	15	118	PSCF110	7	8QAM	80	20
8 000	15	104	PSCF110	7	8QAM	80	19
10 000	15	96	PSCF150	7	8QAM	80	17
12 000	30	97	PSCF150	7	8QAM	80	19
14 000	30	120	PSCF110	11	QPSK	76	19
16 000	30	105	PSCF110	11	QPSK	76	17

Table 7. The planning scheme of cascade genetic-lexicographical algorithm

Wenjing GAO, Guanjun GAO. Economic Modeling and Fast Planning Algorithm of Undersea Optical Cable System[J]. Study On Optical Communications, 2024, 50(3): 23007201

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