Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1999-08-12
2000-07-04
Negash, Kinfe-Michael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359125, 359127, 359128, H04J 1402
Patent
active
060846941
ABSTRACT:
A communications network has a plurality of nodes interconnected by an optical transmission medium. The transmission medium is capable of a carrying a plurality of wavelengths organized into bands. A filter at each node for drops a band associated therewith and passively forwards other bands through the transmission medium. A device is provided at each node for adding a band to the transmission medium. Communication can be established directly between a pair of nodes in the network sharing a common band without the active intervention of any intervening node. This allows the network to be protocol independent. Also, the low losses incurred by the passive filters permit relatively long path lengths without optical amplification.
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Liu Kexing
Milton David
Pigeon Michel
Totti Gino
Valis Tomas
Diaconescu Aprilia U.
Negash Kinfe-Michael
Nortel Networks Corporation
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