title: Compact dual-wavelength thulium-doped fiber laser employing a double-ring filter.
abstract: In this paper, we report on stable dual-wavelength operation of a thulium-doped compact all-fiber laser using a double-ring filter as the wavelength selective element. Simultaneously lasing at 2014.4 and 2018.4 nm has been obtained via tuning the polarization controllers to adjust the relative gain and loss of the laser cavity. The side mode suppression ratios are greater than 52 dB and the output power difference between the two lasing lines is less than 0.08 dB under 2.6 W of incident pump power.
authors.forename: Xuliang
authors.initials: X
authors.lastname: Fan
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
authors.forename: Siming
authors.initials: S
authors.lastname: Wang
authors.forename: Xuan
authors.initials: X
authors.lastname: Liu
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Deyuan
authors.initials: D
authors.lastname: Shen