This invention discloses a signal dispacth method in an optical transmission network including: converting received signals to electric signals to be de-imaged and adapted to a unified particle grade to be processed with asynchronous cross dispatch in an asynchronous cross matrix. This invention also discloses a system including: a photoelectric conversion unit, a de-image unit, an adaptive device, in which, the asynchronous cross matrix receives optical signals to be converted into electric signals by the photoelectric conversion unit to be input into the de-image unit then enters into the adaptive device to be processed and output in a unified particle grade, then enters into the asynchronous cross matrix to be dispatched. |