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oe1(光电查) - 科学论文

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  • Polarization-dependent pulse dynamics of mode-locked fiber laser with near-zero net dispersion

    摘要： We demonstrate novel polarization-dependent pulse dynamics in a fiber laser cavity mode-locked by single-wall carbon nanotubes. By managing the net dispersion and polarization state, we obtain two noise-like pulsing procedures with distinctive polarization characteristics. Ultrafast polarization measurements reveal double pulses are produced by the combined effects of double-scroll chaotic polarization attractors and the polarization mode dispersion of single-mode fiber. The corresponding single-shot spectra provide evidence of coherent energy coupling between pulses during the switching process, due to the polarization hole burning of the active medium. The relative results provide new information for the polarization control of ultrafast lasers.

    关键词： polarization-dependent pulse dynamics,single-wall carbon nanotubes,polarization hole burning,near-zero net dispersion,mode-locked fiber laser

    更新于2025-09-19 17:13:59

  • [IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Switchable Dual-wavelength Erbium-doped Fiber Laser with High OSNR and Stability Using PM-FBG and CFBG

    摘要： A switchable dual-wavelength linear-cavity erbium-doped fiber laser based on a polarization maintaining fiber Bragg grating (PM-FBG) and a chirped FBG (CFBG) is proposed and experimentally demonstrated. Due to the polarization hole burning (PHB) effect introduced by the PM-FBG, the laser designed can operate in stable dual-wavelength mode with a wavelength spacing of 0.667 nm or easily switch to single-wavelength lasing mode by adjusting a polariza-tion controller at room temperature. The optical signal to noise ratio (OSNR) of the dual-wavelength output is >70 dB, and the wavelength fluctuation and power fluctuation are less than 0.02 nm and 0.04 dB respec-tively for both wavelengths during an experimental time of 30 minutes. In addition, the wavelength shifts with temperature tuning is also investigated.

    关键词： switchable,polarization hole burning,polarization maintaining fiber Bragg grating,fiber laser

    更新于2025-09-16 10:30:52