title: Nanosecond soliton pulse generation by mode-locked erbium-doped fiber laser using single-walled carbon-nanotube-based saturable absorber.
abstract: We demonstrate a simple and low cost mode-locked erbium-doped fiber laser (EDFL) operating in the nanosecond region using a single-walled carbon nanotube (SWCNT)-based saturable absorber (SA). A droplet of SWCNT solution is applied on the end of a fiber ferrule, which is then mated to another clean connector ferrule to construct an SA. Then the SA is integrated into a ring EDFL cavity for nanosecond pulse generation. The EDFL operates at around 1570.4 nm, with a soliton-like spectrum with small Kelly sidebands, which confirms the attainment of the anomalous dispersion. It produces a soliton pulse train with a 332 ns width, repetition rate of 909.1 kHz, an average output power of 0.31 mW, and energy of 0.34 nJ at the maximum pump power of 130.8 mW.
authors.affiliation: Department of Electrical Engineering, University of Malaya, Kuala Lumpur, Malaysia.
authors.forename: Mohd Afiq
authors.initials: MA
authors.lastname: Ismail
authors.forename: Sulaiman Wadi
authors.initials: SW
authors.lastname: Harun
authors.forename: Nurul Rozullyah
authors.initials: NR
authors.lastname: Zulkepely
authors.forename: Roslan Md
authors.initials: RM
authors.lastname: Nor
authors.forename: Fauzan
authors.initials: F
authors.lastname: Ahmad
authors.forename: Harith
authors.initials: H
authors.lastname: Ahmad