Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2007-02-20
2007-02-20
Keith, Jack (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
C359S341330, C359S341410
Reexamination Certificate
active
10622580
ABSTRACT:
Multi-wavelength light, including a plurality of segments of light signal with a different wavelength each, is inputted into a Raman amplification fiber. Pumping light generated by a pumping light source is supplied to the Raman amplification fiber in the opposite direction of the transmission direction of the multi-wavelength light. An auxiliary light source generates auxiliary light. An auxiliary light control circuit adjusts the optical power of the auxiliary light with a prescribed response time, based on the change in input power of the multi-wavelength light. The auxiliary light is supplied to the Raman amplification fiber in the same direction as the transmission direction of the multi-wavelength light.
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China Patent Office Action issued Jul. 28, 2006 for Chinese Patent Application No. 03149815.9.
Hayashi Etsuko
Muro Shinichirou
Sugaya Yasushi
Keith Jack
Staas & Halsey , LLP
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