Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1993-12-23
1996-08-20
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
385122, H04B 1024, H01S 330, G02B 626
Patent
active
055484387
ABSTRACT:
A bidirectional optical amplifier uses a four port optical circulator. Optical amplification is obtained in two fiber amplifiers which are connected to the optical circulator.
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AT&T Corp.
Laumann Richard D.
Moskowitz Nelson
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