Optical input power tolerance of InGaAsP electroabsorption modulator

We present long-term life tests of EA modulator modules under high optical input power over +10 dBm for the first time. The module tested under +13 dBm input with -10 V bias did not show any degradation over 3700 hrs. In addition, we discuss degradation mechanisms in modules tested over +15 dBm input with -10 V bias.