In recent years, WDM technology mainly in two directions toward the ultra-long-r

At present, the main use EPON optical access network, or GPON, both up and down

OEO repeaters in long-distance optical fiber communication transmission system l

WDM metro and long-haul wavelength division due to the different needs of differ

EPON + LAN: IP services and CATV signals are transmitted to the user at home by

EPON system uses a single optical fiber 3-wavelength to transmit the whole busin

XYT’s high-speed, large-capacity WDM transmission system, the number of channel