Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2005-09-27
2005-09-27
Gregory, Bernarr E. (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S337100, C359S341400
Reexamination Certificate
active
06950232
ABSTRACT:
An optical amplifier system is disclosed comprising a Thulium-doped fiber span, a pump system, and a feedback loop. The Thulium-doped fiber span receives input optical signals. The pump system pumps light having a wavelength in the range of 1049 nm to 1060 nm onto the Thulium-doped fiber span. The light amplifies the input optical signals to generate amplified optical signals. The Thulium-doped fiber span transfers the amplified optical signals. The feedback loop receives at least one wavelength of amplified emissions from the Thulium-doped fiber span. The feedback loop generates optical feedback signals based the wavelength or wavelengths of the amplified emissions. The feedback loop adds the optical feedback signals to the input optical signals to provide clamping of a gain in the amplified optical signals.
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Bolda Eric
Gregory Bernarr E.
Sprint Communications Company L.P.
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