I think the last part of this paragraph sends a clear message about the ability do do it consistently and reliably. ............................. " Achieving an on-chip optical connection between memory and processor using conventional silicon wafers in an ordinary foundry is “a significant technological accomplishment,” says Shayan Mookherjea, an electrical engineer at the University of California, San Diego, who is also developing optical connections for data centers. However, he points out that making the chips this way requires etching off part of the silicon backing that might otherwise allow light to leak out of the working parts of the chip. That could be tricky to do reliably. " Regards, Crzyhors