Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1998-10-07
2000-01-18
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
359117, 359134, 359179, G02B 626, H01S 300
Patent
active
060162198
ABSTRACT:
An optical line protection switching system is realized by employing a plurality of rare earth-doped fiber optical amplifiers as gain-switched optical connections, for example gain-switched optical distributors, i.e., commutators, and/or gain-switched optical selectors in a gain switched optical line protection switching system. In one embodiment, at least one or more gain switched optical distributors are employed to realize so-called head-end switching of an incoming optical signal and one or more gain switched optical selectors are employed to realize so-called tail-end switching of the optical signal to form a 1.times.1 (1.times.N) optical line protection switching system. In another embodiment, an incoming optical signal is bridged to one or more optical paths, while the tail-end switching is realized by employing one or more gain-switched optical selectors to form a 1+1 (1+N) optical line protection switching system.
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Fatehi Mohammad T.
Knox Wayne Harvey
Lucent Technologies - Inc.
Moskowitz Nelson
Murgia Gregory J.
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