| US 7,580,632 B1 | ||
| Method and apparatus for managing lightpaths in optically-routed networks | ||
| Mark D. Feuer, Colts Neck, N.J. (US); and Vinay V. Vaishampayan, Summit, N.J. (US) | ||
| Assigned to AT&T Intellectual Property II, LP, Reno, Nev. (US) | ||
| Filed on Apr. 08, 2005, as Appl. No. 11/101,778. | ||
| Claims priority of provisional application 60/560665, filed on Apr. 08, 2004. | ||
| Int. Cl. H04B 10/08 (2006.01) | ||
| U.S. Cl. 398—32 [398/30; 398/31] | 14 Claims |
| 1. A method of transmitting a path ID in an optical communication network, comprising the steps of:
combining at least one payload data stream with at least one side data stream comprising the path ID into a composite electrical
data stream;
applying the composite data stream to an optical transmitter to produce an optical signal;
detecting the optical signal with an optical receiver having a maximum frequency of operation less than one-half of the rate
of the composite data stream; and
recovering the side data stream from the electrical output of the optical receiver.
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