Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2005-04-21
2008-05-06
Nguyen, Tu T (Department: 2886)
Optics: measuring and testing
For optical fiber or waveguide inspection
Reexamination Certificate
active
07369219
ABSTRACT:
A converter device that changes the wavelength of optical signals originated by an OTDR to supervise optical networks, in a manner that eliminates the traffic signal interference in the supervision signal, is provided. A method for increasing the OTDR supervision distance range, wherein the converters are placed at route points where the optical signal from the OTDR reaches its useful attenuation limit and needs to be recovered, reducing the number of OTDRs utilized in the supervision system, is also provided.
REFERENCES:
patent: 5185635 (1993-02-01), Trent et al.
patent: 09-210847 (1997-08-01), None
patent: 2000-101513 (2000-04-01), None
Dini Danilo Cesar
Rosolem João Batista
Urso José Eduardo
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Fundacao CPQD-Centro De Pesquisa E Desenvolvimento Em Telecomini
Nguyen Tu T
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