A type of glass optical fiber (GOF) with a very thin inner core that forces light rays to propagate along a single mode, or physical path, through the fiber. SMF has a core diameter of 5
(1) (Standard Messaging Format) An electronic mail format for Novell's MHS messaging system. The application puts the data into this format in order to send an e-mail message. NGM (NetWare Global Messaging) is based on SMF-71, which supports long addresses and synchronized directories.
(2) (Standard MIDI file) See MIDI file.
(3) See singlemode fiber.