摘要
为了评估光纤频率传递的性能,仿真分析了几种主要因素对传递系统稳定性的影响,得到了与相关精密测算一致的结果。理清了频标稳定度损失的来源与机理,证实除强度噪声外几种主要因素的影响大小均与频标的中心频率无关。总结得出,强度噪声是影响频标短期稳定度的最大因素,而消除温度的影响是提高长期稳定度的关键所在。对于常用的日稳定度在10E-16量级的原子频标,要在100km的传递距离上实现近似无损失的传递,必须采取有效的温度补偿措施。
In order to evaluate the performance of fiber in frequency transfer, the analyses and calculation job have been done with the main unstable factors in the distribution system and got the result which in accord with the measurements. The elements and sources of stability loss of transferred frequency have been found in theory. It is also confirmed that the impact of these factors all have nothing to do with the center of the transferred frequency except the intense noise. In a word, intense noise is the most important factor for short-term stability, and the temperature is the key factor for the long-term stability. To keep the stability of the common used atomic frequency, standard with stability of 10E-16 day, there must be some efficient compensation measures over 100kin distance.
出处
《中国测试》
CAS
2009年第5期30-33,共4页
China Measurement & Test
关键词
频率传递
频率稳定度
光纤
相位噪声
强度噪声
Frequency transfer
Frequency stability
Optical fibre
Phase noise
Intense noise
