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We demonstrate a high fundamental repetition rate erbium-doped fiber ring laser operated in strong normal dispersion regime passively mode-locked by the nonlinear polarization rotation technique. A novel scheme of using a polarization beam splitter as both the pump input coupler and the fiber laser output coupler is employed to increase the repetition rate of the fiber laser. Gain-guided solitons...
We report the observation of various multi-pulse dispersion-managed (DM) solitons in a passively mode-locked Erbium-doped fiber laser at near zero net cavity group velocity dispersion. The generated DM solitons are characterized by the Gaussian-like spectral profile with no sidebands. Bound states of multi-pulse DM solitons are also observed.
We report experimental observation of passive harmonic mode locking of bunches of single-pulse solitons or twin-pulse solitons in an erbium-doped fiber ring laser. It shows that harmonic mode locking is a general feature of the laser. The fundamental unit in a harmonically mode locked state could have various pulse compositions.
We demonstrated 40 GHz all-optical clock recovery system using an erbium-doped fiber laser that incorporates a 10 GHz electro-absorption modulator and a linear optical amplifier. We successful recovered 40 GHz clock signals from a 40 Gb/s pseudo random bit sequences. Stable pulses with pulsewidth of 6 ps and timing jitter of 300 fs are obtained.
We demonstrated a 40-GHz actively mode-locked erbium-doped fiber laser that incorporates an electro-absorption modulator and a linear optical amplifier. Stable pulses with peak power of 46 mW and pulsewidth of 2.8 ps are obtained when pumped with 100 mw.
We report on the generation of square pulses in a passively mode-locked fiber ring laser made of purely normal dispersive fibers. The generated square pulses have nanosecond-level pulse duration and no internal structure. The generation mechanism of the pulses is further elaborated
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