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Chinese Journal of Lasers, Volume. 44, Issue 11, 1106006(2017)

Noise Optimization of Repeaterless Remote Demodulation Systems of Fiber-Optic Hydrophone

Wang Zhanghai*, Zhang Hong, Wang Wei, Li Dongming, and Ge Huiliang
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    Figures&Tables (7)
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    References (13)
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    Figures & Tables(7)
    Schematic of 100 km remote demodulation system

    Fig. 1. Schematic of 100 km remote demodulation system

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    Phase noise power spectral density at different input optical powers of Raman amplifier. (a) Test results; (b) noise fitting

    Fig. 2. Phase noise power spectral density at different input optical powers of Raman amplifier. (a) Test results; (b) noise fitting

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    (a) Output spectrum with phase modulation; (b) SBS threshold promotion ratio

    Fig. 3. (a) Output spectrum with phase modulation; (b) SBS threshold promotion ratio

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    RIN power suppression induced by DRS and phase modulation. (a) Theoretical result; (b) test results

    Fig. 4. RIN power suppression induced by DRS and phase modulation. (a) Theoretical result; (b) test results

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    Test results when lithium niobate phase modulator is with and without phase modulation. (a) Phase noise power spectral density; (b) signal amplitude

    Fig. 5. Test results when lithium niobate phase modulator is with and without phase modulation. (a) Phase noise power spectral density; (b) signal amplitude

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    • Table 1. Test and fitting results of phase noise power spectral density at different input optical powers of Raman amplifier

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      Table 1. Test and fitting results of phase noise power spectral density at different input optical powers of Raman amplifier

      PA /dBmTest Dphase /(dB·Hz-1)Fitting Dphase /(dB·Hz-1)Dphase_ASE /( dB·Hz-1)Dphase_DRS /(dB·Hz-1)
      -38.6-87.5-87.5-88.0-97.2
      -35.6-90.3-90.1-91.0-97.2
      -32.5-92.2-92.4-94.1-97.2
      -29.5-94.2-94.2-97.1-97.2

    • Table 2. Test results of phase noise power spectral density with and without phase modulation and analysis of noise sources

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      Table 2. Test results of phase noise power spectral density with and without phase modulation and analysis of noise sources

      ConditionPA /dBmTest Dphase/(dB·Hz-1)Fitting Dphase/(dB·Hz-1)Dphase_ASE/(dB·Hz-1)Dphase_DRS/(dB·Hz-1)
      Without phase modulation-35.6-90.3-90.1-91.0-97.2
      With phase modulation-30.4-95.5-95.4-96.2-103.4
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    Wang Zhanghai, Zhang Hong, Wang Wei, Li Dongming, Ge Huiliang. Noise Optimization of Repeaterless Remote Demodulation Systems of Fiber-Optic Hydrophone[J]. Chinese Journal of Lasers, 2017, 44(11): 1106006

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    Paper Information

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    Received: May. 26, 2017

    Accepted: --

    Published Online: Nov. 17, 2017

    The Author Email: Zhanghai Wang (wang_zhanghai@163.com)

    DOI:10.3788/CJL201744.1106006

    Topics

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