On-line optimization of time and frequency fiber optic links exploiting bi-directional amplifiers

In the paper we present the algorithms intended to launch the long distance, bi-directional fiber optic time and RF frequency transfer system and optimize its performance by minimizing the jitter. The pre-setting procedure is based on the assumption, that for the proper signal transfer and amplification, the optical power in any point of the link cannot decrease below the wisely chosen threshold level. When the power exceeds this level and the time and frequency signals transfer is performed, the optimization procedure is started and tries to minimize the jitter measured at both ends of the link.