Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2005-02-15
2005-02-15
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S341320, C372S099000, C372S102000, C385S037000
Reexamination Certificate
active
06856455
ABSTRACT:
An apparatus has first and second light sources, a plurality of filters, and an optical switch. The light sources output a light beam having a spectrum determined by a gain band thereof. The plurality of filters each have a reflection band included in the gain band. The optical switch selectively couples the filters to the light source. The first and second light sources provide pumping light to a single transmission line. The first and second filters are configured so as to not reflect signal light to be amplified.
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Naganuma Norihisa
Shukunami Norifumi
Fujitsu Limited
Hellner Mark
Staas & Halsey , LLP
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