Open AccessTunable and switchable dual-wavelength mode-locked Tm^3+-doped fiber laser based on a fiber taper
Author(s) -
Shaobin Wang,
Jianfeng Li,
Bo Zhai,
Yanrong Hu,
Kundong Mo,
Rongguo Lu,
Yong Liu
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.015299
Subject(s) - optics , materials science , fiber laser , dispersion shifted fiber , polarization maintaining optical fiber , zero dispersion wavelength , graded index fiber , photonic crystal fiber , fiber , soliton , dissipative soliton , optical fiber , wavelength , optoelectronics , fiber optic sensor , physics , nonlinear system , quantum mechanics , composite material
We demonstrate a self-starting dual-wavelength mode-locked fiber laser at a 2 μm spectral region by using a fiber taper in a Tm 3+ -doped ring fiber cavity. The fiber taper fabricated with a flame brushing technique was used as a periodic filter with a modulation depth of ~3.61 dB and a modulation period of ~7.3 nm, respectively. Diverse dual-wavelength regimes including continuous wave (CW)/multi-soliton, soliton/multi-soliton, and soliton/soliton regimes were obtained by adjusting pump power. Wavelength tuning for the dual-wavelength was also precisely controllable through stretching the fiber taper carefully. The tuning range was ~7 nm which was limited by the modulation period of the taper. By inserting a 10.0 m dispersion compensation fiber (DCF) into the fiber cavity, a stable dual-wavelength dissipative-soliton operation was obtained at 2 μm spectral region for the first time.