Span management system for wavelength division multiplexed network
Patent 5978115 Issued on November 2, 1999. Estimated Expiration Date: 
May 27, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 27, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesOptical monitoring channel for wavelength division multiplexed optical communication system Self-stimulation signal detection in an optical transmission system Patent #: 5859716 InventorsAssigneeApplicationNo. 085356 filed on 05/27/1998US Classes:398/79, Wavelength division or frequency division (e.g., Raman, Brillouin, etc.)398/14, WDM398/87, Grating398/92Including pumpingExaminersPrimary: Negash, Kinfe-MichaelAttorney, Agent or FirmForeign Patent References
International ClassH04J 014/02AbstractA network communication system comprising an optical communication path and a plurality of network elements disposed along the optical communication path. A first network element coupled to the optical communication path includes a first processor and a first optical component. The status of the first optical component being monitored by the first processor. The first processor generates a first electrical signal in accordance with the status of the first optical component. The first network element also includes a service channel transmitter coupled to the first processor and emits a second optical signal to the optical communication path at a second wavelength different than the first plurality of wavelengths in response to the first electrical signal. The second optical signal being modulated in accordance with the second electrical signal. A second network element is coupled to the optical communication path and includes a second processor, a second optical component coupled to the second processor and a service channel receiver coupled to the first processor and to the optical communication path. The receiver senses the second optical signal. The service channel receiver outputs a second electrical signal to the second processor in response to the second optical signal. The second processor controls the second optical component in response to the second electrical signal. | |
