Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2008-01-15
2010-12-14
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C398S202000
Reexamination Certificate
active
07852550
ABSTRACT:
The present invention provides an optical amplifying apparatus having: a CPU11for processing various signals; a plurality of circuits17, 18for controlling respective devices4, 9required for optical amplification; a first storing unit14for storing a program supplied from a user a gate array12for storing various parameters for controlling the devices4, 9, the gate array being updated based on the program which is stored in the first storing unit14and sent via the CPU11; a latch unit13, provided between the gate array12and the circuits17, 18, for interrupting a signal path from the gate array12to the circuits17, 18after receiving a starting signal of an update from the CPU11until the update being finished and for controlling the circuits17, 18based on the parameters stored in the gate array12before the signal path is interrupted; and a second storing unit16for, at least during the update, storing the various parameters which are stored in the gate array12before the update.
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Kagi Nobuyuki
Okaniwa Takeo
Wu Jie
Yoshikawa Toru
Hellner Mark
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
The Furukawa Electric Co. Ltd
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