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Using semiconductor optical amplifier (SOA) as gain medium and active mode-locker, and a dispersion-compensating fibre (DCF) to manage cavity dispersion as well as to control and remedy pulse shape, we report an all-optical clock recovery device capable of continuously recovering the clock frequency of optical return-to-zero (RZ) signals with 10 to 12.5 GHz(More)
A simple and powerful modeling method is established to resolve travelling waves inside photonic devices. The basic idea is to transform usual space-time coordinates (z,t) into a mixed grid (u,v) in which waves propagate along their characteristic lines, resulting in an inherent numerical stability, as well as easy interpretation of all parametric variables(More)
— A hybrid model is proposed in order to exploit the idea of compensating semiconductor optical amplifiers (SOAs) nonlinearity by adjusting cavity dispersion in a SOA-fiber ring mode-locked laser. The model is checked by analytical as well as experimental results. Excellent agreement is obtained in both cases. It is predicted that, once the cavity(More)
A fiber ring laser with a semiconductor optical amplifier (SOA) as active component is investigated using a hybrid model. The SOA is studied using a newly-established 4<sup>th</sup>-order time-domain algorithm, which includes the nonlinear effects of carrier depletion and recovery, as well as gain dispersion. Comparison with existing analytical results(More)
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