Optoelectronics Research Centre, Tampere University of Technology, 3 Korkeakoulunkatu, 33720 Tampere, Finland.
Ulyanovsk State University, 42 Leo Tolstoy street, 432017, Ulyanovsk, Russia.
Sci Rep. 2017 Mar 10;7:44194. doi: 10.1038/srep44194.
Mode-locked fibre laser as a dissipative system is characterized by rich forms of soliton interaction, which take place via internal energy exchange through noisy background in the presence of dispersion and nonlinearity. The result of soliton interaction was either stationary-localized or chaotically-oscillated soliton complexes, which have been shown before as stand-alone in the cavity. Here we report on a new form of solitons complex observed in Bi-doped mode-locked fibre laser operated at 1450 nm. The solitons are arranged in two different group types contemporizing in the cavity: one pulse group propagates as bound solitons with fixed phase relation and interpulse position eventuated in 30 dB spectrum modulation depth; while the other pulses form a bunch with continuously and chaotically moving solitons. The article describes both experimental and theoretical considerations of this effect.
锁模光纤激光器作为耗散系统的特点是丰富的孤子相互作用形式，这些形式通过在色散和非线性存在的情况下通过噪声背景进行内部能量交换发生。孤子相互作用的结果是固定的局域孤子或混沌振荡孤子复合物，这些复合物之前已经在腔中独立显示过。在这里，我们报告了在 1450nm 处工作的掺铋锁模光纤激光器中观察到的一种新的孤子复合物形式。孤子以两种不同的群类型同时在腔中排列：一个脉冲群以固定的相位关系和脉冲间位置传播，导致 30dB 光谱调制深度；而另一个脉冲则形成一个具有连续和混沌移动孤子的束。本文描述了这种效应的实验和理论考虑。
