Compare to the modulation index for frequency modulation.
Cross-phase modulation, a technique used in optical transmission and reception
Frequency modulation | phase | frequency modulation | Pulse-width modulation | phase (waves) | Phase-change material | Phase | modulation | 2010–11 UEFA Europa League qualifying phase and play-off round | S phase | Single-sideband modulation | phase transition | Phase (game) | Laves phase | Frequency Modulation | Amplitude modulation | Three-phase electric power | three-phase | Solid phase extraction | Single-phase electric power | Phase transition | phase space | Phase diagram | modulation (music) | Modified Frequency Modulation | G0 phase | Another Phase | Amplitude Modulation | Two-phase locking | Two-phase commit protocol |