title: Low noise GHz passive harmonic mode-locking of soliton fiber laser using evanescent wave interaction with carbon nanotubes.
abstract: Passive harmonic mode-locking in soliton fiber laser is presented with excellent noise characteristics by employing a single-walled carbon nanotubes saturable absorber designed to interact with evanescent wave of the laser field. The 34(th) harmonic mode-locking pulses at 943.16 MHz repetition rate were stably generated with 18 mW output power, >50 dB side-mode suppression and -140 dB/Hz relative intensity noise. Soliton energy control with polarization controller further increased the harmonic order to 61st, 1.692 GHz, but with compromised performance. Scaling to higher-order harmonic mode-locking is discussed for practical application in optical communication system.
authors: Department of Physics, KAIST, Daejeon, 305-701, Korea.
authors: Chang Su
authors: CS
authors: Jun
authors: Ju Hee
authors: JH
authors: Im
authors: Sang Hwa
authors: SH
authors: Yoo
authors: Sun Young
authors: SY
authors: Choi
authors: Fabian
authors: F
authors: Rotermund
authors: Dong-Il
authors: DI
authors: Yeom
authors: Byoung Yoon
authors: BY
authors: Kim
mesh_terms: D000042:Absorption; D004867:Equipment Design; D005336:Fiber Optic Technology; D053844:Lasers, Solid-State; D036103:Nanotechnology / Q000295:instrumentation*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013057:Spectrum Analysis / Q000295:instrumentation*
chemical_list: D037742:Nanotubes, Carbon