| Summary: | 碩士 === 國立清華大學 === 光電工程研究所 === 103 === Laser noise properties such as amplitude, timing, phase and frequency jitters as a result of nonlinear pulse propagation are experimentally characterized. Our results show pulse propagation in a dispersion-decreasing fiber (DDF) for pulse temporal compression leads to noise degradation. On the other hand, pulse propagation in a dispersion-increasing fiber (DIF) for spectral compression maintains its noise properties in an adiabatic soliton system. In the numerical analysis, it might be possible that the noise such as an amplitude jitter will never change as propagating in dispersion-increasing fiber (DIF). In the experiment, we show that different input chirped pulses may keep their noise properties with the pulse propagation through the DIF.
In the calculation, we analyze the amplitude jitter of the fundamental soliton through the single mode fiber (SMF) first and then point out that the same concept is suitable for the DIF. Experimentally, using the mode-locked fiber laser (MLFL) as a source, the laser noise properties will not change as propagating through the DIF in an adiabatic soliton system.
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