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Laser & Optoelectronics Progress, Volume. 56, Issue 16, 162901(2019)

Stimulated Brillouin Scattering in Few-Mode Fiber

Xu Wang1、**, Zujun Qin1,2、*, Xianming Xiong1,3, and Wentao Zhang1,3
Author Affiliations
  • 1 School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
  • 2 Guangxi Key Laboratory of Automatic Testing Technology and Instruments, Guilin, Guangxi 541004, China
  • 3 Key Laboratory of Photoelectric Information Processing in Guangxi Universities, Guilin, Guangxi 541004, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (16)
    Cited By (2)
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    Figures & Tables(9)
    Acousto-optic coefficients and Brillouin gain spectra of LP01-LP01 mode pair. (a) Normalized acousto-optic coefficients; (b) Brillouin gain spectra

    Fig. 1. Acousto-optic coefficients and Brillouin gain spectra of LP01-LP01 mode pair. (a) Normalized acousto-optic coefficients; (b) Brillouin gain spectra

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    Acousto-optic coefficients and Brillouin gain spectra of LP01-LP11 mode pair. (a) Normalized acousto-optic coefficients; (b) Brillouin gain spectra

    Fig. 2. Acousto-optic coefficients and Brillouin gain spectra of LP01-LP11 mode pair. (a) Normalized acousto-optic coefficients; (b) Brillouin gain spectra

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    Acousto-optic coefficients and Brillouin gain spectra of LP11a-LP11a mode pair. (a) Normalized acousto-optic coefficients; (b) Brillouin gain spectra

    Fig. 3. Acousto-optic coefficients and Brillouin gain spectra of LP11a-LP11a mode pair. (a) Normalized acousto-optic coefficients; (b) Brillouin gain spectra

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    Acousto-optic coefficients and Brillouin gain spectra of LP11a-LP11b mode pair. (a) Normalized acousto-optic coefficients; (b) Brillouin gain spectra

    Fig. 4. Acousto-optic coefficients and Brillouin gain spectra of LP11a-LP11b mode pair. (a) Normalized acousto-optic coefficients; (b) Brillouin gain spectra

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    Brillouin phase shift spectra of different pump-signal mode pairs

    Fig. 5. Brillouin phase shift spectra of different pump-signal mode pairs

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    Schematic of FWM signal phase modulation induced by SBS pump

    Fig. 6. Schematic of FWM signal phase modulation induced by SBS pump

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    Inter-mode FWM phase mismatch factor and corresponding compensation induced by SBS phase shift. (a) Δβ versus signal frequency; (b) compensation induced by SBS phase shift versus pump-signal frequency difference

    Fig. 7. Inter-mode FWM phase mismatch factor and corresponding compensation induced by SBS phase shift. (a) Δβ versus signal frequency; (b) compensation induced by SBS phase shift versus pump-signal frequency difference

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    • Table 1. Parameters for two-mode step-index fiber

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      Table 1. Parameters for two-mode step-index fiber

      ParameterValue
      Core diameter /μm11.9
      Cladding diameter /μm109.0
      Refractive index nco (core)1.4519
      Refractive index nc1 (cladding)1.4440
      Effective refractive index (LP01)1.4498
      Effective refractive index (LP11)1.4468
      Effective area (LP01) /μm294.7
      Effective area (LP11) /μm299.9
      Shear modulus μ1 (core) /GPa25.0
      Shear modulus μ2 (cladding) /GPa0.8
      Acoustic velocity v1 (core) /(m·s-1)5690
      Acoustic velocity v2(cladding) /(m·s-1)5944
      Material mean density ρ0 /(kg·m-3)2210
      Material electrostriction constant γe0.902

    • Table 2. q value of different pump-signal mode pairs

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      Table 2. q value of different pump-signal mode pairs

      Pump-signal
      mode pair      		Acoustic propagation
      constant /(106 m-1)
      LP01-LP0111.754
      LP01-LP1111.742
      LP11-LP0111.742
      LP11-LP1111.730
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    Xu Wang, Zujun Qin, Xianming Xiong, Wentao Zhang. Stimulated Brillouin Scattering in Few-Mode Fiber[J]. Laser & Optoelectronics Progress, 2019, 56(16): 162901

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    Paper Information

    Category: Scattering

    Received: Dec. 25, 2018

    Accepted: Mar. 14, 2019

    Published Online: Aug. 5, 2019

    The Author Email: Xu Wang (632811603@qq.com), Zujun Qin (qinzj@guet.edu.cn)

    DOI:10.3788/LOP56.162901

    Topics

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