| 摘要 |
The system uses multiple optical sources. The optical transmitter includes two optical sources (201,202) supplied simultaneously in series from the point of view of modulation current, although they are supplied separately with direct biasing current. The separation of the bias currents for the two optical sources is achieved by means of inductances (214,215,227) of sufficient size practically to block the alternating modulation current. The first optical source (201) receives the modulating signals derived from an input (216) on its anode, then transmits the modulating signal to the second optical source (202) via a coupling capacitor (226) between the two optical sources. An optical coupler receives the optical power transmitted by each of the optical sources of the optical transmitter and redistributes this optical power between the fibres forming the network. |
