However, it’s known and worth to notice that there will be always a trade-off between residual dispersion and maximum transmission length (which we call “reach”). Therefore, for each particular design we need to consider scenarios that will allow us to avoid such compensation with DCF. Please, see the following attached links according to this statement:
http://www.ece.jhu.edu/~cooper/SPOT/OCDMA%20PON/Extended%20reach%20OCDMA%20with%20passive%20remote%20note.pdf
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=5500592