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Acta Photonica Sinica, Volume. 49, Issue 8, 0806001(2020)

Research on Gain Characteristics of Second-order Raman Fiber Amplifier

Jia-min GONG... Yu-rong ZHANG*, Jun-hua XU, Ning TIAN, Jun-jie MAO, Jia-man HE, Yu-tian XU and Xiao-lei YOU |Show fewer author(s)
Author Affiliations
  • College of Communication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
    Equations (5)
    References (10)
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    Figures & Tables(12)
    Structure of second-order Raman fiber amplifier

    Fig. 1. Structure of second-order Raman fiber amplifier

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    Flow chart of particle swarm optimization algorithm

    Fig. 2. Flow chart of particle swarm optimization algorithm

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    Output gain of six groups of optimized results

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

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    Output gain under the F set of parameters

    Fig. 4. Output gain under the F set of parameters

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    The noise gain of first order RFA and second order RFA

    Fig. 5. The noise gain of first order RFA and second order RFA

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    The powers of pumped lights vary with the fiber length

    Fig. 6. The powers of pumped lights vary with the fiber length

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    The powers of 100-channel signal lights vary with the fiber length

    Fig. 7. The powers of 100-channel signal lights vary with the fiber length

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    Variation of average gain and gain flatness with fiber length

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

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    Variation of average gain and gain flatness with pumped light power

    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 1. Basic optimization parameters

      ParametersValues
      Number of iterationsT = 50
      Number of particlesM = 10
      Dimension of each particleD = 10
      Weight factorw = 1
      Learning factorc1 = 1,c2 = 1
      Number of pumped lightn = 5

    • Table 2. Second order RFA optimization interval setting

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      Table 2. Second order RFA optimization interval setting

      ParametersValues
      Wavelength range of signal light/nmλi ∈[1 510，1 610]
      Power of signal light/mWPi =0.01
      Fiber length/kmL=30
      Wavelength range of second⁃pump light/nmλ1∈[1 300，1 320]
      λ2∈[1 400，1 415]
      λ3∈[1 415，1 430]
      Wavelength range of first⁃pump light/nmλ4∈[1 450，1 465]
      λ5∈[1 480，1 495]
      Power range of second⁃pump light/WP1∈[1.0，2.5]
      P2∈[0.1~0.5]
      P3∈[0.1，0.5]
      Power range of first⁃pump light/WP4∈[0.05，0.15]
      P5∈[0.05，0.15]

    • Table 3. Comparison of six groups of optimization results

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      Table 3. Comparison of six groups of optimization results

      ParametersValues
      ABCDEF
      λ1/nm1 300.41 300.51 301.91 301.51 303.81 300.5
      λ2/nm1 408.31 407.91 408.11 405.71 404.81 407.9
      λ3/nm1 416.91 417.01 420.41 420.41 420.91 417.0
      λ4/nm1 459.91 459.31 461.41 455.21 457.31 459.3
      λ5/nm1 490.11 491.51 490.41 490.11 490.41 491.5
      P1/W2.049 22.003 32.137 41.755 32.338 72.217 9
      P2/W0.248 20.253 30.299 50.473 40.262 20.292 1
      P3/W0.165 30.207 40.140 80.237 70.106 70.177 1
      P4/W0.089 40.090 70.088 70.086 50.098 00.109 7
      P5/W0.104 50.101 40.089 40.086 80.079 80.076 4
      Gmax/dB21.971 822.723 223.272 124.225 124.154 024.109 7
      G/dB21.573 422.283 222.873 223.660 523.696 623.764 7
      ΔG/dB0.918 10.910 70.834 90.994 40.938 20.876 2
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    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

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Aug. 22, 2019

    Accepted: Jun. 23, 2020

    Published Online: Nov. 27, 2020

    The Author Email: ZHANG Yu-rong (zhangyr1993@163.com)

    DOI:10.3788/gzxb20204908.0806001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology