Optimized Design of Second-Order Tellurium-Based Fiber Raman Amplifier Based on Cooperative Search Algorithm

Jiamin Gong; Ku Jin; Yi Zhang; Shanghui Liu; Haiyang Liu; Xumeng Wei

doi:10.3788/LOP222174

Laser & Optoelectronics Progress, Volume. 61, Issue 5, 0506007(2024)

Optimized Design of Second-Order Tellurium-Based Fiber Raman Amplifier Based on Cooperative Search Algorithm

Jiamin Gong¹, Ku Jin^3、*, Yi Zhang², Shanghui Liu³, Haiyang Liu², and Xumeng Wei³

Author Affiliations

¹School of Modern Post, Xi'an University of Posts and Telecommunications, Xi'an 710121, Shaanxi , China

²School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, Shaanxi , China

³School of Communication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, Shaanxi , China

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Figures & Tables(12)

Fig. 1. Structure diagram of second-order T-RFA

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Fig. 2. Schematic diagram of CSA algorithm

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Fig. 3. Output gain of nine groups of optimized results

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Fig. 4. Output gain under the B set of parameters. (a) First-order RFA; (b) second-order RFA

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Fig. 5. Variation of pump power with fiber length. (a) First-order RFA; (b) second-order RFA

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Fig. 6. Variation of 100-way signal optical power with fiber length before and after optimization. (a) Before optimization; (b) after optimization

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Fig. 7. Changes in noise gain before and after optimization and at different orders of T-RFA. (a)(b) ASE and DRBS noise gain before and after optimization; (c)(d) ASE and DRBS noise gain of first-order T-RFA and second-order T-RFA

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Fig. 8. Variation of average gain and gain flatness with fiber length

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Fig. 9. Variation of the average output gain and gain flatness with second-order pump optical power. (a) Variation of the average output gain; (b) variation of the gain flatness

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Table 1. Algorithm property parameter settings
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Table 1. Algorithm property parameter settings
Parameter name Value
Number of iterations T 500
Dimension of each individual D 12
Number of groups G 100
Alpha 0.1
Beta 0.15

Table 2. Basic optimization parameters

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Table 2. Basic optimization parameters

Parameter name	Value
Wavelength range of second-pump light /nm	$λ_{1}$ ‒ $λ_{2}$ ∈［1250，1345］
Wavelength range of first-pump light /nm	$λ_{3}$ ‒ $λ_{6}$ ∈［1376，1500］
Power range of second-pump light /W	$P_{1}$ ‒ $P_{2}$ ∈［0.45，0.7］
Power range of first-pump light /W	$P_{3}$ ‒ $P_{6}$ ∈［0.05，0.3］
Fiber length $L$ /m	250
Iterative steps $h$ /m	5
Maximum pump wavelength $λ_{m a x}$ /nm	1500
Minimum pump wavelength $λ_{m i n}$ /nm	1250
Maximum pump power $P_{m a x}$ /W	0.7
Minimum pump power $P_{m i n}$ /W	0.05
Wavelength range of signal light $λ_{i}$ /nm	1530‒1630
Signal power $P_{i}$ /mW	0.01

Table 3. Comparison of nine group of optimization results

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Table 3. Comparison of nine group of optimization results

Parameter name	Value
Parameter name	A	B	C	D	E	F	G	H	I
$λ_{1}$ /nm	1252.9703	1267.1353	1252.4371	1253.7044	1251.9146	1250.2709	1254.6511	1254.8251	1253.9025
$λ_{2}$ /nm	1343.5379	1338.7066	1343.6151	1341.1765	1342.3587	1339.8163	1344.3866	1342.9608	1343.5297
$λ_{3}$ /nm	1377.6867	1376.3135	1377.9005	1377.8645	1377.6176	1377.5648	1377.9444	1377.6667	1378.0668
$λ_{4}$ /nm	1392.6577	1405.2773	1391.6475	1392.1915	1390.8369	1395.3495	1395.3482	1392.6577	1392.1323
$λ_{5}$ /nm	1479.7551	1422.0085	1470.6217	1471.3503	1472.2613	1470.7021	1470.6228	1471.9751	1471.2432
$λ_{6}$ /nm	1497.5663	1447.3155	1497.4085	1498.1792	1499.1114	1497.8453	1497.3901	1498.8344	1498.0807
$P_{1}$ /W	0.4779	0.5249	0.4878	0.6293	0.5295	0.6938	0.5780	0.5819	0.4815
$P_{2}$ /W	0.4948	0.5707	0.5022	0.5078	0.4622	0.6849	0.5359	0.4505	0.5601
$P_{3}$ /W	0.2499	0.1731	0.2884	0.1953	0.2447	0.1957	0.2665	0.2041	0.2106
$P_{4}$ /W	0.1834	0.1824	0.1894	0.1476	0.2147	0.1931	0.1585	0.1572	0.1517
$P_{5}$ /W	0.2198	0.0882	0.2202	0.1972	0.2214	0.1428	0.2084	0.2196	0.2059
$P_{6}$ /W	0.1008	0.1274	0.1004	0.1094	0.1181	0.0834	0.0866	0.1089	0.1023
$G_{o n - o f f}$ /dB	25.2601	27.3601	26.4061	25.3198	26.0119	27.8037	26.4181	24.4181	23.9797
$Δ$ G /dB	0.9186	0.6601	0.9772	0.9226	0.9626	1.3693	1.3374	0.8822	0.8575

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Jiamin Gong, Ku Jin, Yi Zhang, Shanghui Liu, Haiyang Liu, Xumeng Wei. Optimized Design of Second-Order Tellurium-Based Fiber Raman Amplifier Based on Cooperative Search Algorithm[J]. Laser & Optoelectronics Progress, 2024, 61(5): 0506007

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