Back to results
US 2008/0304138 A1Published application
Optical Amplifier Comprising a Pump Module
OwnerPeter Krummrichinventor
Life of this patent
Estimating the term…
Abstract
In one aspect, an optical amplifier including a pump module, preferably for amplifying channels of a WDM-signal is provided. The outlet thereof is connected to an amplifying fibre wherein signal radiation formed by optical signals is amplified. In order to amplify the optical signals with minimum gain spectrum difference, i.e. in the WDM-technique with minimal channel level differences, pump radiation emerging from the pump module has a mode field diameter in the amplification fibre which is selected so that it is smaller than a mode field diameter of the signal radiation.
Claims7
1-6. (canceled)
An optical amplifier, comprising:
- a pump module, of which an outlet is connected to an amplifying fiber, in which a signal radiation formed by optical signals is amplified, wherein the amplifying fiber is constructed such that a mode field diameter of a signal radiation is at least twice as large as a mode field diameter of a pump radiation given off by the pump module, such that the intensity of the signal radiation is reduced in the amplifying fiber such that the effect of a spectral hole burning is reduced.
Dependencies are inferred from the claim text.