Dual-wavelength, mode-locked erbium-doped fiber laser employing a graphene/polymethyl-methacrylate saturable absorber

• DOI: 10.1364/oe.26.012790
• Publication Date: 2018-05-04T01:29:52Z
• Authors: K. Y. Lau; M. H. Abu Bakar; F. D. Muhammad; A. A. Latif; M. F. Omar; Z. Yusoff; M. A. Mahdi
• Keywords: Saturable absorption; Optical cavity; Mode-Locking

Mode-locked fiber laser incorporating a saturable absorber is an attractive configuration due to its stability and simple structure. In this work, we demonstrate dual-wavelength passively mode-locked erbium-doped employing graphene/polymethyl-methacrylate absorber. A resonator developed based on dual cavity architecture with unidirectional signal oscillation, which connected by branch sharing common gain medium Dual wavelength lasers are observed at approximately 1530 1560 nm 22.6 mW pump power threshold. Soliton pulse circulates in the duration of 900 940 fs shorter longer wavelengths, respectively. This work presents viable option developing low threshold source closely spaced femtosecond pulses C-band region.