The theoretical results indicate that the high-speed operation is limited by the carrierrecoverytime in the SOA and LOA;
结果表明：SOA和LOA中载流子恢复时间限制了信号处理速度；
2
Finally, the performances of this digital demodulator are tested through the simulation of BER and the system joint lock-time, and a carrierrecovery module is implemented in FPGA.
The temperature and its gradient influenced the recovery rate of chloride ion remarkably while the influence of carrier gas velocity and time of distillation are less.