Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2008-07-15
2008-07-15
Hughes, Deandra M. (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S341420
Reexamination Certificate
active
07400443
ABSTRACT:
Optical amplifying method and apparatus are proposed. Constant gain amplifiers operate such that the output power of the amplifier generally tracks the input power. However, optical systems are not perfect and the input to the optical amplifier stage includes not only the desired signal, but also includes accumulated effects of the imperfections. The imperfections include losses of the fiber sections, variations in laser powers, and drifts. Thus, simple amplification not only amplifies the desired signal, but also amplifies accumulated imperfections. Such imperfections occur over time and are generally small in magnitude. By operating the amplifier such that amplification of small variations is suppressed while allowing for tracking of large input variations, amplifying the accumulated imperfections is minimized.
REFERENCES:
patent: 5678198 (1997-10-01), Lemson
patent: 5995274 (1999-11-01), Sugaya et al.
patent: 6025947 (2000-02-01), Sugaya et al.
patent: 6038063 (2000-03-01), Tsuda et al.
patent: 6144485 (2000-11-01), Sugaya et al.
patent: 6288836 (2001-09-01), Kawasaki et al.
patent: 6417965 (2002-07-01), Ye et al.
patent: 6542291 (2003-04-01), Kinoshita et al.
patent: 6583909 (2003-06-01), Wada
patent: 6603596 (2003-08-01), Inagaki et al.
patent: 6631026 (2003-10-01), Kinoshita et al.
patent: 6747790 (2004-06-01), Onaka et al.
patent: 6903324 (2005-06-01), Tomofuji et al.
patent: 6977770 (2005-12-01), Komaki et al.
patent: 6977771 (2005-12-01), Asao et al.
patent: 7027210 (2006-04-01), Tian et al.
patent: 2002/0001124 (2002-01-01), Kinoshita et al.
patent: 2002/0024723 (2002-02-01), Sekiya et al.
patent: 2002/0057491 (2002-05-01), Dorgeuille et al.
patent: 2002/0061738 (2002-05-01), Simmons et al.
patent: 2002/0093729 (2002-07-01), Gerish et al.
patent: 2002/0114066 (2002-08-01), Nakaji
patent: 2002/0176156 (2002-11-01), Zahnley et al.
patent: 2004/0042063 (2004-03-01), Ohtani et al.
Bao Jun
Sridhar Balakrishnan
Bernard Christopher L.
Brown Tyler S.
Ciena Corporation
Clements Bernard Miller
Diacou Ari M
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