| Summary: | 碩士 === 國立交通大學 === 光電工程學系 === 100 === In the first part of this thesis, we proposed a stable and wavelength-tunable semiconductor optical amplifier SOA-based fiber laser with Sagnac ring configuration. Here, this fiber ring laser is SOA-based with Sagnac loop mirror to achieve single-frequency output and save energy power. In the second part, we proposed a dual reflected structure erbium-doped fiber (EDF) laser in single-longitudinal-mode (SLM) for wavelength-tuning. The dual reflected structure of EDF laser with a linear cavity employing a passive saturated absorber based (SAB) filter and tunable bandpass filter (TBF) for the SLM lasing and wavelength tuning. In the third part, we proposed a using Saganc loop of optical-injected semiconductor laser scheme for stable and continuous wave (CW) wavelength-tuning. It is by using self-injected Fabry-Perot laser diode (FP-LD) with Saganc loop scheme. And to achieve the continuous wavelength tuning, we can adjust the temperature of FP-LD for wavelength shifting in the laser scheme. In the fourth part, we proposed a stable wavelength-tuning laser in single-frequency by optical-injected FP-LD and reflective semiconductor optical amplifier (RSOA) for long fiber distance propagation. Finally, the output power, wavelength tunable range, side-mode suppression ratio (SMSR) and output stability of the four proposed laser configurations have been experimentally demonstrated and discussed.
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