title: Individual loss distribution measurement in 32-branched PON using pulsed pump-probe Brillouin analysis.
abstract: 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.
authors.affiliation: NTT Access Network Service Systems Laboratories, NTT Corporation, 1-7-1 Hanabatake, Tsukuba, Ibaraki 305-0805, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Takahashi
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Ito
authors.forename: Chihiro
authors.initials: C
authors.lastname: Kito
authors.forename: Kunihiro
authors.initials: K
authors.lastname: Toge
mesh_terms: D003195:Computer Communication Networks / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D059629:Signal-To-Noise Ratio