Abstract
There has recently been interest in the use of active single external cavities biased below threshold to longitudinally mode stabilize semiconductor lasers, in particular, the so-called cleaved- coupled-cavity or C3 structure. The major applications of such a scheme include maintaining a single longitudinal mode while PCM modulating the laser, modulating the cavity to produce a noncoherent FSK modulation of the laser, or modulating the cavity in association with a long external cavity to produce coherent FSK modulation of a single laser mode.
© 1984 Optical Society of America
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