Optical transmission apparatus and control method therefor

Details Optical transmission apparatus and control method therefor Optical transmission apparatus and control method therefor

2008-11-25

2010-10-05

Pascal, Leslie (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S034000, C398S037000, C398S097000

Reexamination Certificate

active

07809263

ABSTRACT:
An optical transmission apparatus comprising a first detector for detecting the power of the supervisory signal light separated from received wavelength-division multiplexed signal lights; a second detector for detecting the power of the wavelength-division multiplexed signal lights after the separation of the supervisory signal light; a gain-controlled type optical amplifier for amplifying the wavelength-division multiplexed signal lights; an optical attenuator coupled to the amplifier; and a control unit for controlling the optical amplifier and the optical attenuator so as to keep the output level of the wavelength-division multiplexed signal lights to a predetermined target value, wherein the control unit restrains automatic output level control by the optical attenuator when the supervisory signal light power fluctuates within its permissible range and fluctuations in the signal light power have deviated from its permissible range.

REFERENCES:
patent: 5500756 (1996-03-01), Tsushima et al.
patent: 6639716 (2003-10-01), Tomofuji
patent: 7251072 (2007-07-01), Ohtani et al.
patent: 7463829 (2008-12-01), Uda et al.
patent: 2001/0022684 (2001-09-01), Kobayashi
patent: 2003/0147123 (2003-08-01), Kinoshita et al.
patent: 2003/0223106 (2003-12-01), Lee et al.
patent: 2004/0197105 (2004-10-01), Khatana et al.
patent: 2004/0264956 (2004-12-01), Touma
patent: 2005/0157380 (2005-07-01), Hatae et al.
patent: 2005/0270635 (2005-12-01), Shukunami et al.
patent: 2006/0126165 (2006-06-01), Tian et al.
patent: 2006/0198017 (2006-09-01), Inagaki et al.
patent: 2007/0165299 (2007-07-01), Sugaya et al.
patent: 2007/0201876 (2007-08-01), Sugaya
patent: 05-244098 (1993-09-01), None
patent: 09-163413 (1997-06-01), None
patent: 11-121848 (1999-04-01), None
patent: 2001-257646 (2001-09-01), None
patent: 2003-174421 (2003-06-01), None
Japanese Office Action issued in Japanese Patent Application No. JP 2004-089030 dated Feb. 10, 2009.
Proceedings of the 1996 Communications Society Conference of the Institute of Electronics, Information and Communication Engineers (IEICE), Lecture No. B1096.

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