Can EPON support 1:64, 1:128 or even higher spectral ratios?

- Aug 12, 2019-

Recently, many customers have this problem. There is no doubt that the number of LLIDs determines the number of ONUs. LLIDs in EPON standard are stipulated by 16 bits, so it is possible to support 64, 128 or more LLIDs. But when the number of ONUs increases, the average bandwidth of each ONU decreases, on the other hand, the optical loss also decreases. Enlarge. At present, the actual application of 1:128 spectral ratio has not been reported except for the experimental environment. At present, S7500E OLT supports 1:64 spectral ratio.

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