Optical communications – Diagnostic testing – Fault detection
Reexamination Certificate
2011-02-01
2011-02-01
Vanderpuye, Ken N (Department: 2613)
Optical communications
Diagnostic testing
Fault detection
C398S022000, C398S072000, C398S067000, C398S063000
Reexamination Certificate
active
07881607
ABSTRACT:
A method and corresponding apparatus is disclosed for determining a particular Optical Network Terminal (ONT) in a Passive Optical Network (PON) is malfunctioning by sending a continuous stream of light up a shared fiber, which results in adversely affecting communications between the ONT and an Optical Line Terminal (OLT). The example embodiment verifies the failure is due to a faulty optical transmitter in the ONT and not a different network fault, such as a fiber optic line cut or power outage. Through the use of the example embodiment, a service provider can determine in an automated manner which specific ONT of a PON is malfunctioning.
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DeLew David A.
Houlgate Ryan D.
Knuth Nathan D.
Li Weijun
Steyn Manic C.
Hamilton Brook Smith & Reynolds P.C.
Tellabs Petaluma, Inc.
Vanderpuye Ken N
Woldekidan Hibret A
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