title: Quadruple-wavelength actively mode-locked fiber laser with polarization-controlled wavelength switching.
abstract: An actively mode-locked fiber laser with two overlapping cavities is proposed and successfully demonstrated to generate switchable quadruple-wavelength picosecond pulses. The wavelengths are specified by two Bragg gratings in polarization-maintaining and absorption-reducing fiber. By simple adjustment of two polarization controllers, the proposed laser can be made to operate at quadruple wavelength or to switch between wavelengths at room temperature. For wavelength switching, four single-wavelength, six dual-wavelength, and four triple-wavelength operations were performed without changing the repetition rate of the output pulses.
authors.affiliation: Institute of Modern Optics, Nankai University, Tianjin 300071, China. xh_feng1974@sohu.com
authors.forename: Xinhuan
authors.initials: X
authors.lastname: Feng
authors.forename: Yange
authors.initials: Y
authors.lastname: Liu
authors.forename: Lihui
authors.initials: L
authors.lastname: Liu
authors.forename: Yao
authors.initials: Y
authors.lastname: Li
authors.forename: Shuzhong
authors.initials: S
authors.lastname: Yuan
authors.forename: Guiyun
authors.initials: G
authors.lastname: Kai
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Dong