A simple optical sampling scheme for ultra-high speed optical A/D conversion is demonstrated. 10GHz microwave signal is sampled using 10ps optical pulses generated by a mode lock laser, and 6 bits resolution is achieved.
Absence of relaxation oscillation in SOA fiber ring lasers is analyzed in this paper, which is always presented in actively mode- locked erbium-doped fiber (EDF) ring lasers. The super-mode competition can be effectively suppressed in SOA ring lasers due to the gain saturation of SOA. The experimental demonstrations were confirmed the above issues and good stability in a SOA mode-locked fiber ring laser without any feedback circuits was shown.