125-km Long Cavity Based on Self-Seeded RSOAs Colorless Sources for 2.5-Gb/s DWDM Networks

The laser behavior of reflective semiconductor optical amplifier self-seeded sources is investigated. 2.5-Gb/s transmission is realized with optical cavities of 10, 26, 100, and 125 km for access and metropolitan networks, realizing the longest amplified self-seeded external cavity laser. Moreover, Gigabit Ethernet, common public radio interface, and 2.5-Gb/s transmissions are experimented using amplified self-seeded reflective semiconductor optical amplifier wavelength division multiplexing passive optical networks systems. A field trial setup is exploited to test the system performance in terms of reach and optical budget.