| 摘要 |
<p>An optical transmission system, optical transmitting apparatus and method, and optical receiving apparatus and method are provided, which belong to optical communication field. The system includes transmitting part apparatus and receiving part apparatus. The optical transmitting apparatus includes precoder module, multiplexer module and modulator module. The optical receiving apparatus includes demodulator module and transformer module. The optical transmitting method includes the following steps: perform precode, multiplexing and modulation for the signal to be transmitted, then output it. The optical receiving method includes the followingsteps: receive optical signal of the transmission signal; perform demodulation for the signal according to the preset time delay, the preset time delay equals to the product by multiplying the number of the branches that will be multiplexed by the transmitting apparatus and the code period of the signal that is multiplexed by the transmitting apparatus; transform the demodulated optical signal to the electric signal, get the information of the transmission signal according to the electric signal. In the present invention, the existing low speed parts of an apparatus are used to realize high speed precode function in the high speed optical transmission system, the extended time delay is used in the demodulation, and the cost and difficulty to realize the system are reduced.</p> |
