Stable single-longitudinal-mode operation under high-speed direct modulation in cleaved-coupled-cavity GaInAsP semiconductor lasers

Abstract

We describe a new self-aligned coupled-cavity laser formed by a simple variation of the usual cleaving procedures. Such cleaved-coupled-cavity (CCC or C3) lasers were highly single-longitudinal-moded with spectral and stability as good as those obtained from frequency-selective feedback lasers such as distributed feedback and distributed Bragg reflector lasers under high-speed direct modulation.