Periodic intensity variations on the pulse-train of a passively mode-locked fiber ring laser

• Published in: Optics communications Vol. 283; no. 19; pp. 3798 - 3802
• Main Authors: Yang, Lingzhen, Zhu, Jianfeng, Qiao, Zhanduo, Yan, Xiyue, Wang, Yuncai
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2010; Elsevier
• Subjects: Controllers; Exact sciences and technology; Fiber laser; Fiber lasers; Fibers; Fluctuation; Fundamental areas of phenomenology (including applications); Holes; Laser optical systems: design and operation; Lasers; Mode-locked; Modulation, tuning, and mode locking; Nonlinear optics; Nonlinear polarization rotation; Nonlinearity; Optical solitons; nonlinear guided waves; Optics; Physics; Polarization; Pumps; Ring lasers; Soliton; Soliton; Nonlinear polarization rotation; Fiber laser; Mode-locked; Laser mode locking; Optical solitons; Ring lasers; Mode locked laser; Optical rotation; Nonlinear optics; Fiber lasers
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2010.05.036

We investigate the evolvement of the periodic intensity variations of the pulse-train in a fiber ring laser mode-locked by the nonlinear polarization rotation technique. It is found that the phenomenon of such intensity fluctuations is related to the orientation of the polarization controllers when the pump power is fixed. The numerical results show that the mechanism of the periodic intensity variations is caused by the interaction of the nonlinear polarization rotation and the passive polarizer in the cavity.