中国物理B ›› 2020, Vol. 29 ›› Issue (1): 14203-014203.doi: 10.1088/1674-1056/ab577d

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Propagation characteristics of parallel dark solitons in silicon-on-insulator waveguide

Zhen Liu(刘振), Weiguo Jia(贾维国), Yang Wang(汪洋), Hongyu Wang(王红玉), Neimule Men-Ke(门克内木乐), Jun-Ping Zhang(张俊萍)   

  1. School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021 China
  • 收稿日期:2019-08-16 修回日期:2019-09-13 出版日期:2020-01-05 发布日期:2020-01-05
  • 通讯作者: Weiguo Jia E-mail:jwg1960@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61741509).

Propagation characteristics of parallel dark solitons in silicon-on-insulator waveguide

Zhen Liu(刘振), Weiguo Jia(贾维国), Yang Wang(汪洋), Hongyu Wang(王红玉), Neimule Men-Ke(门克内木乐), Jun-Ping Zhang(张俊萍)   

  1. School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021 China
  • Received:2019-08-16 Revised:2019-09-13 Online:2020-01-05 Published:2020-01-05
  • Contact: Weiguo Jia E-mail:jwg1960@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61741509).

摘要: The propagation characteristic of two identical and parallel dark solitons in a silicon-on-insulator (SOI) waveguide is simulated numerically using the split-step Fourier method. The parallel dark solitons imposed by the initial chirp are investigated mainly by changing their power, their relative time delay. The simulation shows that the time delay deforms the parallel dark soliton pulse, forming a bright-like soliton in the transmission process and making the transmission quality down. By increasing the power of one dark soliton, the energy of the other dark soliton can be increased, and larger increase in a soliton's power leads to larger increase in the energy of the other. When the initial chirp is introduced into one of the dark solitons, higher energy consumption is observed. In particular, positive chirps resulting in pulse broadening width while negative chirps narrowing, with an obvious compression effect on the other dark soliton. Finally, large negative chirps are found to have a profound impact on parallel and nonparallel dark solitons.

关键词: silicon-based optical waveguide, dark soliton, nonlinear effect, interaction

Abstract: The propagation characteristic of two identical and parallel dark solitons in a silicon-on-insulator (SOI) waveguide is simulated numerically using the split-step Fourier method. The parallel dark solitons imposed by the initial chirp are investigated mainly by changing their power, their relative time delay. The simulation shows that the time delay deforms the parallel dark soliton pulse, forming a bright-like soliton in the transmission process and making the transmission quality down. By increasing the power of one dark soliton, the energy of the other dark soliton can be increased, and larger increase in a soliton's power leads to larger increase in the energy of the other. When the initial chirp is introduced into one of the dark solitons, higher energy consumption is observed. In particular, positive chirps resulting in pulse broadening width while negative chirps narrowing, with an obvious compression effect on the other dark soliton. Finally, large negative chirps are found to have a profound impact on parallel and nonparallel dark solitons.

Key words: silicon-based optical waveguide, dark soliton, nonlinear effect, interaction

中图分类号:  (Optical solitons; nonlinear guided waves)

  • 42.65.Tg
42.65.-k (Nonlinear optics) 73.40.Qv (Metal-insulator-semiconductor structures (including semiconductor-to-insulator)) 42.25.Bs (Wave propagation, transmission and absorption)