The injection-locking properties of self pulsation in semiconductor lasers are studied, using a phenomenological approach, based on an analogy with laser models. It has been found that the locking range is directly proportional to the input power, rather than to the square root of the input power as in injection-locked microwaves or laser oscillators; the locking range is symmetric with respect to the self-pulsation frequency in the free-running case; in the locking state, the spectral linewidth of the self-pulsation peak is equal to that of the incoming signal. These theoretical results agree very well with experimental ones, obtained on a distributed feedback three-section laser.
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Duan et al. (1997) studied this question.
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