Method and apparatus for transmission of upstream data in an optical network

By time division multiple access technology for transmitting uplink data optical network, the transmitting node for uplink data and first wavelength according to the transmission device. The node for the timing signal and second wavelength of the uplink data. The timing signal reflection wavelength a selective reflection unit is each end nodes. Terminal node tracking timing signal in order to determining transmitting uplink data according to the transmission command by time. Optical network comprises a distribution fiber coupled to the external equipment node system of termination. External equipment node with a fiber coupled to a node. External equipment node a bypass/combiner and a selective reflection unit. Wavelength with light reflection unit and second wavelength the timing signal, and mm and an optical the up and down data transmission.