Theoretic analysis on self-organized coherence of fiber laser array

Elementary theoretical investigation on self-organized fiber laser array was carried out in this paper. The simplest case for the fiber laser array, i.e., the phase-locking course of two fiber lasers was modeled and analyzed theoretically and numerically. The effect of detuning frequency and coupling coefficient to the phase-locking course was analyzed. For the case that there was no frequency detuning, the array was always in out-of-phase mode. Otherwise, the condition of frequency detuning for phase locking was deduced, and the method for weakening the condition was analyzed in short.