cryptolog_73_page_23

cryptolog | 73 page 23 | https://thedailydialectics.com/pdfs/FIOA/cryptolog_73/cryptolog_73.pdf

DOCID: 4009853 (U) At the same time that the glass has been improved, the light transmittera and detectors have also been improved, especially in matters of lifetime and reliability. A few years ago the lasers and light emitting diodes had Lifetimes measured in a few hours, but this has been…