The analysis of system performance of WDM/OCDMA-PON based on DQPSK

The paper proposes an OCDM/WDM PON system solution based on DQPSK which has passed theoretical and simulative tests. This solution can realize the effective integration between OCDMA technology and DWDM system. Compared with the traditional OCDMA/WDM system, this solution saves a large number of OCDMA decoders/encoders, effectively reduces the complexity of the system integration process, and accomplishes seamless integration and upgrade. The results show that compared with the OCDM/WDM PON system based on OOK, the OCDM/WDM PON system based on DQPSK has advantages as follows: higher sensitivity for the receiving system; better system security and wider system noise margin. These advantages provide the DQPSK-based OCDM/WDM PON system solution with a better application prospect.