INSTABILITY OF FAST KERR SOLITONS IN AlGaAs WAVEGUIDES AT 1.55 MICRONS

摘要

We observed experimentally a power-dependent polarization instability of the fast spatial soliton in AlGaAs slab waveguides. The slow soliton remains stable. The instability occurs at power levels below which the nonlinear index change becomes comparable to the birefringence and is caused by coupling to radiation fields via four-wave mixing.