Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2005-09-13
2005-09-13
Gregory, Benarr E. (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
Reexamination Certificate
active
06943936
ABSTRACT:
A Raman amplifier includes a Raman gain fiber comprising a length of high-dispersion gain fiber and operable to receive at least one optical signal. The Raman amplifier also includes at least one pump source capable of generating at least one pump signal that co-propagates within the Raman gain fiber with at least a portion of the at least one optical signal received by the Raman gain fiber. The length of the high-dispersion gain fiber is at least ten (10) times a walk off length between the at least one pump signal and at least one wavelength of the at least one optical signal received by the Raman gain fiber. In addition, the length of high-dispersion gain fiber is at least two (2) times a walk off length between at least two optical signal wavelengths of the at least one optical signal received by the Raman gain fiber.
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Freeman Michael J.
Islam Mohammed N.
Baker & Botts L.L.P.
Gregory Benarr E.
Hughes Deandra M.
The Regents of the University of Michigan
Xtera Communications Inc.
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