Abstract
Multidimensional complex optical potentials with partial parity-time () symmetry are proposed. The usual symmetry requires that the potential is invariant under complex conjugation and simultaneous reflection in all spatial directions. However, we show that if the potential is only partially symmetric, i.e., it is invariant under complex conjugation and reflection in a single spatial direction, then it can also possess all-real spectra and continuous families of solitons. These results are established analytically and corroborated numerically.
© 2014 Optical Society of America
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