Using of Optic Fiber Links for Reference Frequency Transmission Over a Distance up to 85 km

A scheme of standard RF signal transmission over an electronically stabilized fiber link is described in the paper. The system was tested for fiber link length up to 85 km. In this scheme an intermediate controlled crystal oscillator of 100 MHz was used as a compensation node. Experimental results of the 100 MHz RF signal transmission over the 85 km optical fiber are presented. It is demonstrated that using a system of electronic compensation provides significant advantages in spatially separated standards comparison.