Optical node device and system including the device

Details Optical node device and system including the device Optical node device and system including the device

2001-09-24

2008-10-07

Leung, Christina Y (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S059000

Reexamination Certificate

active

07433600

ABSTRACT:
Disclosed herein is an optical node device applicable to an optical network including a closed loop provided by an optical fiber. This optical node device includes a tunable wavelength selecting element adapted to input WDM signal light obtained by wavelength division multiplexing a plurality of optical signals having different wavelengths, the tunable wavelength selecting element having a function of dropping at least one optical signal from the WDM signal light and a function of adding at least one optical signal to at least one unassigned wavelength channel of the WDM signal light; and a wavelength selecting filter optically connected to the tunable wavelength selecting element for removing noise present in any bands other than a signal band of each optical signal passing through the tunable wavelength selecting element. With this configuration, the oscillation of optical power in the closed loop can be prevented by the use of the wavelength selecting filter for removing noise in any bands other than the signal band.

REFERENCES:
patent: 4945531 (1990-07-01), Suzuki
patent: 5917625 (1999-06-01), Ogusu et al.
patent: 6211980 (2001-04-01), Terahara
patent: 6351323 (2002-02-01), Onaka et al.
patent: 6538782 (2003-03-01), Otsuka et al.
patent: 6563615 (2003-05-01), Milton et al.
patent: 6594410 (2003-07-01), Kersey et al.
patent: 6674968 (2004-01-01), Xie
patent: 11145910 (1999-05-01), None
patent: 11218790 (1999-08-01), None
patent: 11289296 (1999-10-01), None
patent: 2000082997 (2000-03-01), None

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