Group Velocity Dispersion tolerant WDM TDM Passive Optical Networks

In the present work, we have analyzed the effects of dicode coding in a passive optical network based on both wavelength and time division multiplexing (WDM-TDM-PON). By numerical analysis, we observed that network using dicode coding is more tolerant to Group Velocity Dispersion (GVD) as compared to traditional Non-return to zero - on-offkeying(NRZOOK) coding. Dispersion degrades the sensitivity of NRZ receiver by 5.5 dB hence limiting the number of users and channel length. With the observations from analysis and results, we suggest the use of Dicode coding to double the number of usersand increase the length of the network by 20percentin respect to NRZ.