Optical communication system

Optical communications – Receiver – Including optical element

Reexamination Certificate

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Reexamination Certificate

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07546043

ABSTRACT:
Signal light with a specific wavelength is transmitted and extracted from signal light multiplexed by a WDM method, and a light detection unit detects the signal light detected by an optical tunable filter, whose wavelength transmission characteristic varies depending on a control signal. An operation circuit generates information for designating a control signal needed to enable the optical tunable filter to extract signal light with a designated wavelength, based on the detected results of two segments of signal light located at each edge of a wavelength band obtained by shifting the wavelength transmission characteristic of the optical tunable filter from outside the wavelength band including all segments of the entire WDM signal. A driving circuit generates a control signal according to the designation information.

REFERENCES:
patent: 5552919 (1996-09-01), Majima et al.
patent: 6262822 (2001-07-01), Obhi et al.
patent: 6351323 (2002-02-01), Onaka et al.
patent: 6407376 (2002-06-01), Korn et al.
patent: 6441933 (2002-08-01), Jang
patent: 6597480 (2003-07-01), Iida et al.
patent: 6748179 (2004-06-01), Lange et al.
patent: 6845108 (2005-01-01), Liu et al.
patent: 6888856 (2005-05-01), Green et al.
patent: 7024116 (2006-04-01), Orbach et al.
patent: 7292787 (2007-11-01), Kai et al.
patent: 2002/0030868 (2002-03-01), Salomaa
patent: 2002/0101633 (2002-08-01), Onaka et al.
patent: 2002/0118459 (2002-08-01), Kuznetsov
patent: 2002/0126348 (2002-09-01), Lange et al.
patent: 2003/0007522 (2003-01-01), Li et al.
patent: 2003/0133649 (2003-07-01), Hakimi et al.
patent: 2003/0202190 (2003-10-01), Atia et al.
patent: 2004/0091002 (2004-05-01), Watterson et al.
patent: 2004/0197099 (2004-10-01), Kai et al.
patent: 2006/0193354 (2006-08-01), Rosenblatt
patent: 4-166909 (1992-06-01), None
patent: 6-102555 (1994-04-01), None
patent: 8-288932 (1996-11-01), None
patent: 9-261206 (1997-10-01), None
patent: 11-218790 (1999-08-01), None
patent: 11-289296 (1999-10-01), None
patent: 2000-241782 (2000-09-01), None
patent: 2000-349713 (2000-12-01), None
patent: 2001-284711 (2001-10-01), None
patent: 2003-344817 (2003-12-01), None
Communication—European Search Report for European Application No. 04004430.7-2415- dated Jun. 16, 2006.
Communication—Partial European Search Report for European Application No. 04004430.7-2415- dated Apr. 19, 2006.
European Patent Office Action, dated Sep. 29, 2006, and issued in related European Patent Application No. 04 004 430.7—2415.
Japanese Patent Office Notice of Rejection Grounds, mailed Mar. 18, 2008 and issued in corresponding Japanese Patent Application No. 2003-051740.

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