Method for optimizing the sequence of passive filter...

Details Method for optimizing the sequence of passive filter... Method for optimizing the sequence of passive filter...

2006-02-21

2006-02-21

Healy, Brian (Department: 2883)

Optical communications

Multiplex

Wavelength division or frequency division

C398S043000, C398S079000, C398S082000, C398S083000, C385S024000

Reexamination Certificate

active

07003229

ABSTRACT:
The present invention provides for a method for optimizing the sequence of passive filter configuration in optical mux/demux devices for Wavelength Division Multiplex transmission systems and optical passive filter system obtained with that method, in which the optimization is obtained by taking care of the attenuation profile of the transmission optical fiber, and the variations of the spectral loss profile. The optimizing method permits to select the filter sequence maximizing the minimum span length of the network.

REFERENCES:
patent: 6519384 (2003-02-01), Persson
patent: 2002/0071156 (2002-06-01), Tervonen et al.
patent: 1 109 341 (2001-06-01), None
patent: 1 109 342 (2001-06-01), None
ITU-T G.694.2 dated Jun. 2002—Series G: Transmission Systems and Media, Digital Systems and Networks—Spectral grids for WDM applications: CWDM wavelength grid.
ITU-T G.652 dated Mar. 2003—Series G: Transmission Systems and Media, Digital Systems and Networks—Characteristics of a single-mode optical fibre and cable.

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