Span management system for wavelength division multiplexed netwo

Details Span management system for wavelength division multiplexed netwo Span management system for wavelength division multiplexed netwo

1998-05-27

1999-11-02

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359130, 359134, 359110, H04J 1402

Patent

active

059781157

ABSTRACT:
A 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.

REFERENCES:
patent: 5532864 (1996-07-01), Alexander et al.
patent: 5859716 (1999-01-01), O'Sullivan et al.

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