Abstract
The dynamical characteristics of distributed Bragg reflection lasers with a Bragg reflection bandwidth narrower than the cavity mode spacing are reported. The operation of this Bragg reflector as an amplitude modulator (unlike the usual frequency modulator) is demonstrated in the small and large signal modulation regimes. In the conventional mode of gain modulation, this narrow Bragg reflector exhibits detuned loading effects. The laser is capable of efficient digital modulation as well as Q-switching, both with a very small drive current.
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