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<p>We propose and theoretically analyze a quadruple frequency-tunable and phase-tunable optoelectronic oscillator (OEO) based on the gain-loss compensation of stimulated Brillouin scattering (SBS) effect and carrier phase-shifted double sideband (CPS-DSB) modulation of DPMZM. Through optical modulation, four pump lights with same intensity and specific frequency spacing equal to double Brillouin frequency shift are generated and launched in a highly nonlinear fiber (HNLF) from the direction opposite to the CPS-DSB signals. By the gain-loss compensation of SBS effect, an oscillating signal whose frequency is equal to quadruple Brillouin frequency shift is realized. The frequency of the generated microwave signal can be changed within a certain range by tuning the wavelength of the tunable laser source (TLS). The phase can be tuned by controlling the direct current bias voltage of the dual-parallel Mach-Zehnder modulator (DPMZM). As a result, a fundamental oscillation signal, with a frequency tunable range from 35.12&#xa0;GHz to 37.76&#xa0;GHz and a tunable phase from 0&#xa0;deg to 360&#xa0;deg, is realized in theory. In addition, the phase noise at 10&#xa0;kHz offset is -110.74 dBc/Hz when the wavelength of the TLS is set at 1550&#xa0;nm.</p>

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Quadruple frequency-tunable and phase-tunable optoelectronic oscillator based on stimulated Brillouin scattering

  • 期刊论文

  • 发表日期：

    2025年9月4日

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  • Yue Wang,
  • Shuang Qiu,
  • Chang Li,
  • Mengzhen Yang,
  • Lei Zhao,
  • Lina Zheng,
  • Shiyin Li

摘要

We propose and theoretically analyze a quadruple frequency-tunable and phase-tunable optoelectronic oscillator (OEO) based on the gain-loss compensation of stimulated Brillouin scattering (SBS) effect and carrier phase-shifted double sideband (CPS-DSB) modulation of DPMZM. Through optical modulation, four pump lights with same intensity and specific frequency spacing equal to double Brillouin frequency shift are generated and launched in a highly nonlinear fiber (HNLF) from the direction opposite to the CPS-DSB signals. By the gain-loss compensation of SBS effect, an oscillating signal whose frequency is equal to quadruple Brillouin frequency shift is realized. The frequency of the generated microwave signal can be changed within a certain range by tuning the wavelength of the tunable laser source (TLS). The phase can be tuned by controlling the direct current bias voltage of the dual-parallel Mach-Zehnder modulator (DPMZM). As a result, a fundamental oscillation signal, with a frequency tunable range from 35.12 GHz to 37.76 GHz and a tunable phase from 0 deg to 360 deg, is realized in theory. In addition, the phase noise at 10 kHz offset is -110.74 dBc/Hz when the wavelength of the TLS is set at 1550 nm.