Temperature Independent Optical Amplification in Uncooled Quantum Dot Optical Amplifiers

1.3 μm QD SOAs are shown to provide 19 dB optical gain at temperatures up to 70 °C, allowing <; 0.1 dB system penalty at 10 Gb/s. The gain is constant to within ± 3.5 dB from 20°C-70°C for 10 nm spectral bandwidth.