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We report an experimental study on the spectral dependence of depolarized guided acoustic-wave Brillouin scattering (GAWBS) in a silica single-mode fiber (SMF) on acoustic impedance of external materials. The GAWBS spectrum was measured when the acoustic impedance was changed from 1.51 to 2.00 kg/smm2. With increasing acoustic impedance, the linewidth increased; the dependence was almost linear with...
We fabricated a 6-μm-diameter graphene-covered microfiber (GCM) with a controllable and convenient method, and realized passively mode-locked fiber lasers at 1.55μm and 2μm with the same GCM serving as a saturable absorber for the first time. Such GCM has high potential for ultrafast photonics applications over broadband wavelength.
We report for the first time, generation of dissipative soliton from a ring-cavity thulium fiber laser mode-locked with the use of a carbon nanotubes saturable absorber and a length of DCF producing 416pJ pulse energy.
A pumping-power-dependent high-order harmonic mode-locking erbium-doped fiber laser (HML-EDFL) with a single-wall carbon nanotube (SWCNT)-doped polyvinyl alcohol (PVA)-based saturable absorber is investigated. The HML-EDFL systems using either all-physical-contact (PC) or all-angled-physical-contact (APC) connectors examined in this study show stably mode-locked pulse trains; however, the all-PC connector-based...
We review our studies on passively mode-locked fiber lasers and nonlinear optical devices using carbon nanotube (CNT). CNT-based devices offer several key advantages such as: ultra-fast response, robustness, tunability of wavelength, and compatibility to fibers.
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