Assertion: dispersion's effect | /r/Causes | degradation
Facets:
Source sentences:
text: If DSF is used (dispersion less than 1 ps-nm-km), then FWM effects are maximized; the effect causes degradation at channel spacings of less than 80 GHz, and at a channel spacing of 25 GHz around 80% of the optical energy in the original two signals will be transferred into either sum or difference frequencies.