Method for measuring the optical signal-to-noise ratios OSNR...

Details Method for measuring the optical signal-to-noise ratios OSNR... Method for measuring the optical signal-to-noise ratios OSNR...

2005-01-25

2005-01-25

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

06847440

ABSTRACT:
A method for measuring the optical signal-to-noise ratio in a Wavelength Division Multiplex (DWDM/WDM) transmission system is described in which the effect of the amplified spontaneous emission ASE differs through different components located in the transmission system such as various filters, for example. The measuring points of the signal and noise powers to measure the optical signal-to-noise ratio are selected in accordance with the spectral characteristics of these components by a network management system.

REFERENCES:
patent: 6433864 (2002-08-01), Chung et al.
patent: 6549572 (2003-04-01), Anderson et al.
patent: 6660990 (2003-12-01), Boertjes et al.
patent: WO 0209299 (2002-01-01), None

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