| 摘要 |
In coupling a control station 11 transmitting a radio signal to a plurality of base stations each transmitting the radio signal to a terminal station by an optical fiber, and dependently connecting the plurality of base stations to the optical fiber, the control station 11 includes a radio signal transmitter 16 and an electrical-to-optical converter 17, each of the base stations 12 includes an SOA-EAM 18 comprises a semiconductor optical amplifier (SOA) and an electro-absorption modulator (EAM), a down link radio signal amplifier 19, and a down link antenna 20, the SOA-EAM 18 receiving an optical signal from the control station 11. It is possible to provide an optical transmission system which can prevent optical power from lowering even if the number of base stations increases and which can facilitate adding a base station since an optical coupler is not used.
|
