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Opt Express. 2013 Mar 25;21(6):6739-48. doi: 10.1364/OE.21.006739.

Individual loss distribution measurement in 32-branched PON using pulsed pump-probe Brillouin analysis.

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  • 1NTT Access Network Service Systems Laboratories, NTT Corporation, 1-7-1 Hanabatake, Tsukuba, Ibaraki 305-0805, Japan.


We describe loss distribution measurement in a passive optical network (PON) using pulsed pump-probe Brillouin analysis. A preliminary experiment is demonstrated using a 32-branched PON constructed in the laboratory. We analyze the signal to noise ratio of this measurement and show that the method can realize a 25 dB dynamic range in 90 seconds (10000 times averaging), with an event location resolution of 10 m, and a fiber length identification resolution of 2 m.

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