Toward next generation of long-reach 6x10 Gbit/s WDM/TDM Access Network based on directly modulated hybrid silicon lasers

Recent progresses on hybrid integration of III-V on Silicon widely tunable laser technologies are presented for achieving high performance colorless ONU. We demonstrate a symmetric 60 Gbit/s aggregate rate WDM/TDM PON. The device is tuned on six wavelengths over the C-band. The use of the high output power hybrid silicon transmitter enables a minimum of 29 dB (33 dB) optical budget at BER = 1.10-3 (in-band FEC assumed) under 10 Gb/s (2.5 Gb/s) direct modulation over 25 km and 50 km. Long-reach transmission over 100-km single-mode fiber is also demonstrated. We believe that integrated hybrid III-V/Si devices will have important applications for WDM transmission for both short range and long haul optical transmission.