Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2006-08-01
2006-08-01
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
Reexamination Certificate
active
07085041
ABSTRACT:
Provided is a Raman amplifier which can be downsized and achieves a wider gain band. It includes a Raman-amplification optical fiber, a light source for outputting pulse light, a wide-band-light generator for receiving the pulse light and outputting wide-band light having a wider wavelength range than the pulse light, an optical filter, and a pump-light supply unit for supplying light from the optical filter to the Raman-amplification optical fiber. Also provided is an optical transmission system which employs the above-mentioned Raman amplifier and is suitable for transmitting multiplexed-wavelength signal light.
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patent: 6717963 (2004-04-01), Foursa
patent: 6856737 (2005-02-01), Parker et al.
patent: 2004/0196531 (2004-10-01), Nicholson
patent: 001460783 (2004-09-01), None
patent: 11-195829 (1999-07-01), None
patent: 2002-40497 (2002-02-01), None
Emori, Y. et al. “100-nm bandwith flat-gain Raman amplifiers pumped and gain-equalized by 12-wavelength-channel WDM laser diode unit”, Electron, Lett, vol. 35, No. 16 (1999).
Tsuzaki, T. et al. “Broadband Discrete Fiber Raman Amplifier with High Differential Gain Operating Over 1.65 μm-band”, OFC2001, MA3.
Hellner Mark
McDermott Will & Emery LLP
Sumitomo Electric Industries Ltd.
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