Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1996-11-15
1998-09-15
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
359337, 359343, H04B 1016, H01S 3131, G02F 139
Patent
active
058087850
ABSTRACT:
A rare earth-doped optical fiber is supplied with a input signal light and an excitation light, so that the input signal light is amplified to be supplied to an output as an amplified signal light. At this time, an intensity of an amplification of spontaneous emission (ASE) is detected to be compared with a predetermined intensity, thereby to provide a difference signal. An amount of the excitation light is controlled by the difference signal to equalize the ASE to the predetermined intensity.
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Moskowitz Nelson
NEC Corporation
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