OPTICAL LINE TERMINAL

摘要

PROBLEM TO BE SOLVED: To appropriately transmit an uplink burst optical signal even in the case where a transmission rate is increased.

SOLUTION: An optical line terminal (OLT) 12 is connected with a plurality of ONUs using an optical fiber branched by an optical splitter. The OLT 12 includes: a light-receiving element 34 for receiving a burst optical signal stream obtained by multiplexing burst optical signals outputted from the ONUs; an amplitude level-adjusting section 36 for detecting a received light level for each burst optical signal; and a transmission order control section 35 for controlling a transmission order of burst optical signals from the ONUs in such a way that a received light level difference between adjacent burst optical signals becomes equal to or less than a predetermined reference light level difference.

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