Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2006-08-09
2009-06-23
Connelly Cushwa, Michelle R (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S014000, C385S037000, C398S162000, C398S209000
Reexamination Certificate
active
07551815
ABSTRACT:
A method is disclosed for monitoring and controlling the bit error rate (BER) in an optical communication network where an optical receiver in the optical transmission network. The method includes the steps of decombining a combined channel signal received from the network and then monitoring a real time bit error rate (BER) of a decombined channel signal. The determined BER is then communicated, such as through an optical service channel (OSC) to an optical transmitter source that is the source of origin of the channel signal. Based upon the determined BER, the chirp of a channel signal modulator at the optical transmitter source that generated the monitored channel signal is adjusted by, for example, adjusting its bias. The same channel signal received at the optical receiver can be monitored again to determine if an acceptable level for the BER has been achieved by the previous chirp adjustment.
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K. Okamoto et al., ȁ
Chiang Ting-Kuang
Dominic Vincent G.
Kish, Jr. Fred A.
Nagarajan Radhakrishnan L.
Welch David F.
Carothers, Jr. W. Douglas
Connelly Cushwa Michelle R
Infinera Corporation
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