Optical communications – Fault recovery – Bypass inoperative element
Reexamination Certificate
2006-07-04
2006-07-04
Sedighian, M. R. (Department: 2633)
Optical communications
Fault recovery
Bypass inoperative element
C398S003000, C398S007000, C398S020000, C398S050000, C398S059000, C398S079000, C398S063000
Reexamination Certificate
active
07072580
ABSTRACT:
An autoprotected optical communication ring network includes a first and a second optical carrier having opposite transmission directions and a plurality of optically reconfigurable nodes optically connected along the first and the second optical carrier and adapted to communicate in pairs on links susceptible to failure, the ring network having a normal operative condition in which the nodes of each pair are optically configured so as to exchange optical signals on a working arc path at a respective first wavelength (λx) on the first carrier and at a respective second wavelength (λy) different from the first wavelength (λx) on the second carrier, the working path having a complementary arc path defining a protection arc path in which the first wavelength (λx) on the first carrier and the second wavelength (λy) on the second carrier can be used for further links.
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Aprile Aldo
Arecco Fulvio
Viscardi Valerio
Baker & Botts L.L.P.
Cisco Technology Inc.
Kim David S.
Sedighian M. R.
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