four-wave mixing (FWM), A:760,
762, 833
four-photon scattering (FPS) process,
A:838
photon–photon scattering process,
A:838
signal and idler photons, A:838
four-wave mixing, B:40, 52, 166, 167, 209,
211, 215–217, 241, 253, 260, 273, 274,
567, 573, 578, 668, 673, 675, 676, 831
Fourier space, B:818
Fourier transforms, B:818
frame check sequence, B:359
frame relay, B:479, 481
France Telecom, B:458
Franz–Keldysh modulators, A:399
Franz-Keldysh effect (FK), A:195, 196,
213, B:5
free spectral range, B:194, 257
free-space optics, B:139
frequency drift, B:62, 113, 139, 247
frequency estimation, B:158, 162, 165
see also phase estimation
frequency jitter, B:143
frequency offset compensation, B:163
frequency-domain
explanation, B:54
split-step, B:833
frequency-encoding code division ...