A sheet feeding device capable of again feeding, when failed to feed a sheet, the sheet by retry control is disclosed. The coupling method includes the electromagnetic wave bifurcate stage, mode conversion stage, and may combine with a polarization conversion stage. The laminated polymer material is optionally also a barrier to oxygen molecules. Further, the method includes an operation for detecting a write to the shared page of memory after the re-mapping of the GPP to the shared page, where the write to the shared page is caused by a write to the GPP.