title: Dark pulse generation in fiber lasers incorporating carbon nanotubes.
abstract: We demonstrate the generation of dark pulses from carbon nanotube (CNT) incorporated erbium-doped fiber ring lasers with net anomalous dispersion. A side-polished fiber coated with CNT layer by optically-driven deposition method is embedded into the laser in order to enhance the birefringence and nonlinearity of the laser cavity. The dual-wavelength domain-wall dark pulses are obtained from the developed CNT-incorporated fiber laser at a relatively low pump threshold of 50.6 mW. Dark pulses repeated at the fifth-order harmonic of the fundamental cavity frequency are observed by adjusting the intra-cavity polarization state.
authors.forename: H H
authors.initials: HH
authors.lastname: Liu
authors.forename: K K
authors.initials: KK
authors.lastname: Chow
mesh_terms: D007834:Lasers; D037742:Nanotubes, Carbon / Q000737:chemistry*; D055100:Optical Fibers; D013057:Spectrum Analysis
chemical_list: D037742:Nanotubes, Carbon