Optical communications – Transmitter and receiver system – Including compensation
Reexamination Certificate
2008-03-04
2008-03-04
Chan, Jason (Department: 2613)
Optical communications
Transmitter and receiver system
Including compensation
C398S066000
Reexamination Certificate
active
11200873
ABSTRACT:
Optical networks as defined by the IEEE 802.3ah standard suffer from Stimulated Raman Scattering (SRS) that causes data transmission at a first optical wavelength to interfere with broadcast video transmission at a second optical wavelength in single mode optical fibers. The problem is exacerbated when data is not being transmitted across the network; and instead, an idle pattern transmission is being transmitted in order to keep the network synchronized. The repetitive nature of the idle pattern transmission leads to the SRS optical interference effect. This optical interference effect is mitigated when countermeasures are implemented to modify the idle pattern transmissions or to transmit random data in place of the idle pattern transmissions.
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Brown Alan M.
Farmer James O.
Kenny John J.
Thomas Stephen
Chan Jason
King & Spalding LLP
Wang Quan-Zhen
Wave7 Optics, Inc.
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