论文部分内容阅读
在孤子长距离通信中,限制单信道比特(bit)率的主要因素是由Gordon-Haus(G-H)效应引起的到达时间抖动.为减少此抖动,人们提出了时域控制及频域滤波等方法.由于时域控制使系统难以实现波分复用方式传输,而频域滤波法可方便地实现波分复用,此法在传输链路上周期性地放置带通滤波器,即可达到降低G-H效应的目的.最近理论分析表明,若使滤波器的峰值频率沿链路缓慢滑移,孤子系统的稳定性及抗噪声能力将进一步得到改善.
In soliton long-distance communication, the main factor that limits the single-bit rate is the arrival time jitter caused by the Gordon-Haus (GH) effect. To reduce this jitter, time-domain control and frequency domain filtering are proposed Because the time domain control makes the system difficult to realize the WDM mode transmission, and the frequency domain filtering method can conveniently realize the WDM, and the method can periodically reduce the bandpass filter placed on the transmission link GH effect.Recent theoretical analysis shows that if the filter’s peak frequency is slowly slipped along the link, the stability and anti-noise ability of the soliton system will be further improved.