Discrete ultra-slow optical solitons based on optomechanical effect.

We demonstrate that discrete solitons are possible in a micro-fabricated optomechanical structure, which consists of N identical cells. Analyses illustrate that these states originate from photon-phonon interaction or optomechanical effect. In principle, the self-localized entities are capable of exhibiting very slow velocities, depending on the photon hopping rate and phase difference among successive optomechanical cells. The theoretical results pave the way for a new type of on-chip system to observe discrete optical solitons behaviors and may have potential application in on-chip manipulation of photonic information processing.