Abstract
Single-longitudinal-mode (SLM) operation of semiconductor lasers is of interest for chromatic dispersion tests and long-haul direct detection transmission links of single-mode fibers. The influence of the optical feedback due to an external mirror on the spectral behavior of semiconductor lasers is well known.1 Monochromaticity is obtained with a two-resonator design of a coupled-cavity laser. Mode selectivity is due to the frequency dependence of the coupled-cavity resonator loss.2
© 1986 Optical Society of America
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