H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/02 (2006.01) H04B 10/08 (2006.01)
Patent
CA 2512710
An optical network including multiple nodes is subject to intermittent faults that may raise alarms in the system. The invention focuses on an optical network based on the Any rate architecture. A single fault such as a client failure at a node in such a network can give rise to a loss of client signal leading to multiple alarms detected at multiple points. To alleviate this problem this invention provides switching in a special Signature signal in place of the lost client signal. By detecting the Signature signal containing a specific code, the fault on the any rate- based architecture can be uniquely identified. In addition to fault identification, the Signature signal on the network makes it possible to maintain Clock and Data Recovery Locks at downstream nodes. The Signature signal serves also as a vehicle for carrying a special optical tag called Wavekey provided by the Wavelength Tracker technology developed by the Applicant. This optical tag includes a low frequency modulation of one or more dither tones onto an optical channel, which is uniquely identified by the tag. Maintaining the Wavekey is important for tracing the end-to-end path and power level of the signal on each wavelength. A method and a Field Programmable Gate Array-based system for the generation and identification of such a Signature signal that not only identifies the fault that has occurred on the optical network but also provides for the maintenance of the Wavekey, are described.
Holmes David Michael Ryan
Reepschlager Paul Mark
Alcatel-Lucent Canada Inc.
Donnelly Victoria
Tropic Networks Inc.
LandOfFree
Method and system for providing a signature signal in an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for providing a signature signal in an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for providing a signature signal in an... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1698830