Optical: systems and elements – Optical amplifier – Particular active medium
Reexamination Certificate
2004-07-02
2009-06-30
Keith, Jack W (Department: 3663)
Optical: systems and elements
Optical amplifier
Particular active medium
C359S341410, C398S177000
Reexamination Certificate
active
07554721
ABSTRACT:
A pumping unit supplies pumping light to a fiber connecting medium; a light monitoring unit detects light power of multiple-wavelength light; and a control unit controls the pumping light based on light power detected by the light monitoring unit and connecting medium information indicating optical characteristics in the connecting medium. The connecting medium information includes information indicating a fiber type of the fiber connecting medium, information indicating a length of the fiber connecting medium, an average fiber loss coefficient of the fiber connecting medium and an intra-station loss value.
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International Search Report mailed Nov. 4, 2003 for corresponding application No. PCT/JP03/09820.
Hiraizumi Maki
Nakata Masao
Shimano Yoshio
Diacou Ari M
Fujitsu Limited
Keith Jack W
Staas & Halsey , LLP
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