US 2006/0233552 A1 · Method for preemphasising an optical multiplex signal

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.

Claims22

Dependent claims

-18. (canceled)

A method of pre-emphasizing an optical multiplex signal comprising a plurality of signals having different wavelengths, the plurality of signals transmitted from a transmitter to a receiver, the method comprising:

determining an average power for the signals to be transmitted to the receiver;
determining a first current power of the signals at the transmitter;
determining a second current power of the signals at the receiver;
determining new power values from the first and second current powers and the average power;
and
adjusting a transmitting power of the transmitter according to the new power values, wherein determining the new power values is based on equalizing signal-to-noise ratios of the signals received at the receiver.

3 more elements

Dependencies are inferred from the claim text.

Method for preemphasising an optical multiplex signal

Life of this patent

Method for preemphasising an optical multiplex signal

Life of this patent

Abstract

Claims22