We demonstrate a wavelength-tunable, passively mode-locked erbium-doped fiber laser based on graphene and chirped fiber Bragg grating. The saturable absorber used to enable passive mode-locking in the fiber laser is a section of microfiber covered by graphene film, which allows light-graphene interaction via the evanescent field of the microfiber. The wavelength of the laser can be continuously tuned by adjusting the chirped fiber Bragg grating, while maintaining mode-locking stability. Such a system has high potential in tuning the mode-locked laser pulses across a wide wavelength range.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: March 13, 2012
Revised Manuscript: May 25, 2012
Manuscript Accepted: May 27, 2012
Published: June 13, 2012
Xiaoying He, Zhi-bo Liu, and D. N. Wang, "Wavelength-tunable, passively mode-locked fiber laser based on graphene and chirped fiber Bragg grating," Opt. Lett. 37, 2394-2396 (2012)