Facing the challenges of ever-growing bandwidth demand, WDM-PON is expected as the ultimate solution for next generation high-speed access networks. In Chunghwa Telecommunication Laboratories, two WDM-PON architectures using colorless light sources are being developed. One is based on injection-locked FP-LD with 16 channels for up-stream and down-stream transmissions, the other is based on RSOA using the low reflective FP-LD as down stream extinction ratio squeezer. Both WDM-PON systems are performed on error-free bidirectional transmission with 1.25Gbps data rates over 20-km transmission distance, and the triple services (voice, data and video) are also successfully demonstrated for application test. A fiber fault monitoring design is also presented for the WDM-PON that can monitor all channels in real time. These results will serve as the basis for WDM-PON system performance evaluation in future network plans.
WDM-PON (Wavelength Division Multiplexing - Passive Optical Network) TDM-PON (Time Division Multiplexing - Passive Optical Network) PF-LD (Fabry-Perot laser diode) BLS (Broadband Light Source) RSOA (Reflective Semiconductor Optical Amplifier)