Optical: systems and elements – Optical amplifier
Patent
1998-12-07
2000-09-05
Hellner, Mark
Optical: systems and elements
Optical amplifier
359341, 359161, 359174, H01S 300
Patent
active
061151734
ABSTRACT:
In an optical fiber transmission line between two terminal stations, an input side wavelength converter for up-shifting a wavelength of a signal light is inserted at a front part of each of the optical amplifiers and an output side wavelength converter for down-shifting a wavelength of a signal light is inserted at a rear step of the optical amplifiers. Signal lights transmit in a wavelength band shorter or longer than the zero dispersion wavelength of the transmission optical fiber on said transmission optical fibers. The input side wavelength converter converts the wavelength of the signal lights from the transmission optical fibers within the amplifying bandwidth of the optical amplifiers and the output side wavelength converter returns the wavelength of the signal lights optically amplified by the optical amplifiers.
REFERENCES:
patent: 5696614 (1997-12-01), Ishikawa et al.
patent: 5777770 (1998-07-01), Naito
patent: 5877781 (1999-03-01), Miyauchi et al.
patent: 5940207 (1999-08-01), Weich et al.
patent: 5991477 (1999-11-01), Ishikawa et al.
patent: 6043914 (2000-03-01), Cook et al.
Edagawa Noboru
Tanaka Keiji
Yamamoto Shu
Hellner Mark
KDD Corporation
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