Theory 012/Optics & Photonics
Nonlinearity Is an Area Ratio
The claim
The onset of nonlinear impairment in fibre links is set by the ratio of launch power to effective mode area rather than by power.
01The mechanism
Intensity drives nonlinearity; larger effective area spreads the same power over more glass.
02Predictions
- P1Impairment should collapse onto the power-to-area ratio.
- P2Larger-area fibre should tolerate more power.
03Refutation
Impairment tracking power at fixed area would leave area irrelevant.