Optical amplifier, excitation light source control method...

Optical: systems and elements – Optical amplifier – Optical fiber

Reexamination Certificate

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C359S337120

Reexamination Certificate

active

06873457

ABSTRACT:
An optical amplifier for use in, for example, a wavelength multiplexing optical communication system, in order to allow an excitation light source to be enlargeable or removable in accordance with an increase/decrease in the number of channels in signal light even if the optical communication system is in operation.

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