Generation of mode-locked states of conventional solitons and bright-dark solitons in graphene mode-locked fiber laser

Zixiong Li; Mingyu Li; Xinyi Hou; Lei Du; Lin Xiao; Tianshu Wang; Wanzhuo Ma

doi:10.1007/s12200-023-00067-2

Generation of mode-locked states of conventional solitons and bright-dark solitons in graphene mode-locked fiber laser

Front Optoelectron. 2023 Jun 2;16(1):12. doi: 10.1007/s12200-023-00067-2.

Authors

Zixiong Li¹, Mingyu Li², Xinyi Hou¹, Lei Du¹, Lin Xiao¹, Tianshu Wang¹, Wanzhuo Ma¹

Affiliations

¹ Department of Optical Engineering, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
² Department of Optical Engineering, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun, 130022, China. limingyu@cust.edu.cn.

Abstract

This paper proposes a mode-locked fiber laser based on graphene-coated microfiber. The total length of the fiber laser resonant cavity is 31.34 m. Under the condition of stable output of bright-dark soliton pairs from the fiber laser, dual-wavelength tuning is realized by adjusting the polarization controller (PC), and the wavelength tuning range is 11 nm. Furthermore, the effects of polarization states on bright-dark solitons are studied. It is demonstrated that the mode-locking state can be switched between conventional solitons and bright-dark solitons in the graphene mode-locked fiber laser. Bright-dark soliton pairs with different shapes and nanosecond pulse width can be obtained by adjusting the PC and pump power.

Keywords: Bright-dark soliton pairs; Conventional soliton; Fiber laser; Graphene.