Details

Autor(en) / Beteiligte

• Amaral, Gustavo C.
• Garcia, Joaquim D.
• Herrera, Luis E. Y.
• Temporao, Guilherme P.
• Urban, Patryk J.
• von der Weid, Jean Pierre

Titel

Automatic Fault Detection in WDM-PON With Tunable Photon Counting OTDR

Ist Teil von

• Journal of lightwave technology, 2015-12, Vol.33 (24), p.5025-5031

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2015

Quelle

IEEE Xplore

Beschreibungen/Notizen

• An automatic fiber-optical fault analysis system making use of a tunable photon counting optical time-domain reflectometry (OTDR) (ν-OTDR) is proposed and demonstrated in a passive optical network testbed. The employment of the ℓ trend filter as a signal processing tool enables the minimization of the intrinsic coherent random noise impact on the acquired data and also an automatic identification of fiber faults. A feedback loop between an FPGA-based acquisition unit and the filter's selections yields highly accurate automatic results and minute monitoring periods with ITU-T grid DWDM tunability, spatial resolution of 6 m and a measured 32 dB dynamic range.