Gain and noise characteristics of a 1.5 μm near-travelling-wave semiconductor laser amplifier

Abstract
The spectral dependence of the gain and noise characteristics of a gas source molecular beam epitaxy (GSMBE)-grown BH-GaInAsP near-travelling-wave semiconductor laser amplifier are presented, from which an indication of nonresonant internal losses is given. An intrinsic noise figure of 6 dB at an internal gain of 28 dB is obtained.