Title :
Pulse-Width Tuning in a Passively Mode-Locked Fiber Laser With Graphene Saturable Absorber
Author :
Xiaoying He ; Wang, D.N. ; Zhi-Bo Liu
Author_Institution :
Dept. of Opt. Sci. & Eng., Fudan Univ., Shanghai, China
Abstract :
An absorption-adjustable graphene saturable absorber is used in a simple fiber laser system for an active control of the pulse-width of optical pulses. Such a saturable absorber is created by tightly attaching the graphene film onto the upper surface of the microfiber, thus an enhanced evanescence-field interaction between the propagating light along the microfiber length and graphene can be achieved. By tuning the polarization state of the light beam launched into the saturable absorber from TE to TM mode, the pulse-width of the pulses is varied between ~ 9.24 and ~ 2.32 ps.
Keywords :
fibre lasers; graphene; laser beams; laser mode locking; laser tuning; micro-optics; optical control; optical fibre polarisation; optical saturable absorption; C; TE mode; TM mode; absorption-adjustable graphene saturable absorber; enhanced evanescence-field interaction; graphene film; light beam polarization state tuning; light propagation; microfiber length; microfiber upper surface; optical pulses; passively mode-locked fiber laser; pulse-width active control; pulse-width tuning; simple fiber laser system; Fiber lasers; Graphene; Laser mode locking; Optical fiber dispersion; Optical fiber polarization; Optical pulses; Fiber laser; graphene; microfiber; pulse-width tunable; saturable absorber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2294017
