aspect of the present disclosure relates generally to circuit 100 to sustain a radio frequency (RF) modulated optical signal. This circuit can part of the optical signal comprises a self-injection locking component 107 having optical fiber delay lines 130 that propagates. The circuit, vary in length, and at least two optical fiber cables 120, 140, another portion of the optical signal is propagated, is coupled to the at least two optical fiber cables, one of each of the optical fiber cable self-phase-locked loop component 109 and a phase detector 150 that is configured to determine a phase difference between the signals propagating through the can also comprise. The circuit self-administration further it can comprise a voltage controlled oscillator 110 which is configured to generate a stable oscillation signal in accordance with the synchronization component and the signal generated by each of the self-phase-locked loop component, stable oscillation signal is configured to maintain the optical signal.FIELD 2
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