In this paper, we experimentally demonstrate generation of diverse structures of robust optical pulses obtained with a ring cavity passively mode-locked fiber laser based on a double-clad erbium-ytterbium doped fiber, and operating at net-anomalous cavity dispersion. A half-wave and a quarter-wave retarder plates allow adjustable saturable absorbing action by the nonlinear polarization rotation technique. Pulsed laser operation in quasi- continuous wave, molecules of solitons, and single-wavelength noise-like pulses (NLPs) regimes is obtained by properly adjusting the wave retarders. In the soliton and NLPs operating regimes, the central laser wavelength lies in the 1540 nm region. The obtained NLPs exhibit narrow peak coherence of ∼231 fs.

在本文中，我们通过实验证明了使用基于双包层掺铒镱光纤的环形腔被动锁模光纤激光器获得的鲁棒光脉冲的不同结构的生成，并在净反常腔色散下运行。半波和四分之一波延迟板允许通过非线性偏振旋转技术实现可调节的饱和吸收作用。通过适当调整波延迟器，可以获得准连续波、孤子分子和单波长类噪声脉冲 (NLP) 机制中的脉冲激光操作。在孤子和 NLP 工作机制中，中心激光波长位于 1540 nm 区域。获得的 NLP 表现出约 231 fs 的窄峰相干性。