Gain-Power Trade-Off in Low-Confinement Semiconductor Optical Amplifiers

We report simulation and experimental results to explore the fundamental trade-off between small-signal gain (G<sub>0</sub>) and saturation output power (P<sub>0,SAT</sub>) in semiconductor optical amplifiers having very small (< 1%) optical confinement factor Gamma. We demonstrate a high-power 1.5-mum InGaAsP slab-coupled optical waveguide amplifier (SCOWA… (More)