| 摘要 |
In a method of amplitude equalization of a plurality of optical signals having mutually different wavelengths, the optical signals are launched into a first end of an optical fibre (5). The optical signals are amplified, before being launched into the fibre (5), to a level at which at least one of the signals exceeds a stimulated Brillouin scattering (SBS) threshold value (TSBS) characteristic of the fibre, so that part of the signal energy in the fibre is transferred to a Stokes signal propagating in the fibre (5) in a direction opposite to said optical signals. An apparatus for amplitude equalization of a plurality of optical signals having mutually different wavelengths comprises an optical fibre (5) having an input end (6) where said optical signals may be supplied to the fibre, and an output end (10) where said optical signals may be tapped from the fibre after equalization. The fibre (5) has a characteristic stimulated Brillouin scattering (SBS) threshold value (TSBS) which corresponds to a preselected maximum amplitude value of the optical signals on the output end (10) of the fibre.
|
