Increasing the Capacity of SAC-OCDMA: Forward Error Correction or Coherent Sources?

Enhancing the Performance of Coherent Sources SAC OCDMA Networks via Spatial Multiplexing

“…However, since there is no analytical expression for the intensity for more than two lasers that vary in phase and polarization, Monte Carlo simulation must be used [22]. The characteristic function of intensity for each spectral bin must be calculated.…”

“…In our analysis we consider three different laser source configurations [22]. They are shared multi-laser source, uniformly distributed multi-laser source and controlled multilaser source.…”

“…In order to overcome the above mentioned limitations of incoherent sources, the use of coherent sources in SAC OCDMA has been considered [22,26]. It is important to note that coherent sources suffer from beat noise resulting from the laser signals overlapping in frequency [22].…”

“…It is important to note that coherent sources suffer from beat noise resulting from the laser signals overlapping in frequency [22]. This beat noise, if not mitigated, can result in limiting the performance of SAC OCDMA systems, even more than incoherent sources.…”

“…This beat noise, if not mitigated, can result in limiting the performance of SAC OCDMA systems, even more than incoherent sources. Ayotte and Rusch [22] performed a capacity prediction comparing three different laser source configurations to incoherent sources alone and incoherent sources with forward error correction (FEC). They showed that for highly populated networks, a multi laser source with highly controlled lasers' central frequencies will provide the best performance.…”