Optimization of uncooled RSOA parameters in WDM reflective PONs based on self-coherent or direct detection OLT receivers

We investigate on the uncooled RSOA driving parameters in reflective-PONs, focusing on an upstream path at 1.25 Gbit/s and binary modulation. We show how the optimal values change using direct-detection or self-coherent receivers. We also address operating temperature dependence issues.