分类： 物理学 >> 电磁学、光学、声学、传热、经典力学和流体动力学 提交时间： 2023-08-25
摘要： Waveguide design has always been an important part of photonic integrated devices, and its research is also developing. In this paper, the coupling between waveguides is studied from two aspects of coupled mode theory and finite element simulation. In addition, this paper gives an example of dispersion engineering caused by dual-core waveguides structure, which has a wide range of applications in supercontinuum. To sum up, coupled mode theory has important reference significance for the design of modern photonic devices.
分类： 物理学 >> 电磁学、光学、声学、传热、经典力学和流体动力学 提交时间： 2023-08-25
摘要： We demonstrate dispersion engineered dissipative soliton mode locked lasers, by means of intracavity spatial light modulation (SLM). The inline cavity GVD control of wide range (-0.28 ps2 ~ 0.06 ps2) in the laser cavity is realized, by which we achieve continuous and stable switching of traditional solitons, dispersion-managed solitons and dissipative solitons. A transient process of pulse-adaptive reconstruction is observed during the switching of different solitons. Transitions of soliton dispersive waves from Kelly sidebands, and transforms to quartic solitons have been observed via tuning the high-order dispersion coefficients. w-shaped solitons are demonstrated under negitive second-order dispersion and positive fourth order dispersion.
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