Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2004-04-16
2008-12-02
Vanderpuye, Kenneth (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S094000, C398S034000
Reexamination Certificate
active
07460784
ABSTRACT:
The invention relates to a method for easily and rapidly preemphasizing an optical multiplex signal transmitted by an emitter to a receiver consisting wherein signal-to-noise ratios are equalized by means of simple measurement or new adjustment of signal power on the bandwidth of the optical multiplex signal, at least in the receiver, instead of measuring the noise output power or the signal-to-noise ratio. Said invention is based on a balance of the signal-to-noise ratios which are authorized by a transmitting system, in which the spectral influences of gain profiles, noise effects and dampings are taken into consideration. In particular, when DWDM transmission techniques are applied, in which adjacent channel spacings of the optical multiplex signal are very low, the inventive method makes it possible to use a small number of sensitive and high-resolution measuring instruments for pre-emphasis control.
REFERENCES:
patent: 5790289 (1998-08-01), Taga et al.
patent: 5815299 (1998-09-01), Bayart et al.
patent: 2002/0109883 (2002-08-01), Schemmann et al.
patent: 2002/0154356 (2002-10-01), Krummrich
patent: 2002/0167907 (2002-11-01), Sarkar et al.
patent: 198 48 989 (2000-05-01), None
patent: 1 130 803 (2001-09-01), None
patent: 1 280 288 (2003-01-01), None
patent: 1 349 310 (2003-10-01), None
patent: 2 845 841 (2004-04-01), None
patent: WO 02/09299 (2002-01-01), None
A.R. Chraplyly, J.A. Nagel and R.W. Tkach; “Equalization in Amplifier WDM Lightwave Transmission Systems”; IEEE Photonics Technology Letters; 1992, pp. 920-922; vol. 4, No. 8.
Eder Christian
Peisl Wolfgang
Rapp Lutz
Bell Boyd & Lloyd LLP
Nokia Siemens Networks GmbH & Co. KG
Vanderpuye Kenneth
Woldekidan Hibret A
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