Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1994-08-31
1996-10-29
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
359337, H04B 1000, H01S 300, G02F 139
Patent
active
055702279
ABSTRACT:
Disclosed is a method and apparatus for preventing the occurrence of surge light that may be caused by an off-to-on transition of input signal light in an optical amplifier using an erbium-doped optical fiber. An input electrical signal, optical modulator output, leakage light, or light output is monitored to detect the off-to-on transition of the signal light, and the energy level of the input signal light or pumping light is gradually increased from a low level to an operating level.
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Araki Hirofumi
Nabeyama Yoshio
Fujitsu Limited
Moskowitz Nelson
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