Authors have got the patent on the method of the phase automatic control system
with utilization of the differential RF FODL with two optical fibers of the differential
geometrical length. The structure of OEO with such the PLL system is presented in
Fig. 7.38.
Fig. 7.37 The tracking
system on the base of
frequency (a) and phase (c)
automatic control system
with RF FODL. Regulation
curves (b)
452
7 Optoelectronic oscillator (OEO) as the Time and Spatial Correlator of Random. . .