Ultra-long distance soliton transmission: putting fiber nonlinearity to work

摘要: The author discusses how the soliton owes its very existence to fiber nonlinearity. As a pulse self-trapped in time, it is able resist great many effects, such as chromatic dispersion and polarization dispersion, that are highly destructive of ordinary ("linear") pulses. It extremely robust this regard. transmission line picks out whatever reasonable launched into it, discards residue dispersive wave radiation. In with amplifiers, tends propagate stably over an indefinitely long distance. For broad-band line, however, one optical frequency good another. This indifference makes relatively easy for spontaneous emission, by way nonlinear term, change soliton's frequency, hence velocity. resultant random spread arrival times, known Gordon-Haus effect, limit maximum allowable bit-rate error-free transmission. >