See cutoff wavelength.

See dispersion.

A concept, defined in ANSI standards, for an optical-fiber-based token-ring network, featuring (a) dual counter-rotating logical rings, each with a data transmission capacity of 100 Mb/s, (b) reliable data transfer, (c) active link monitoring, (d) station management, and (e) survivability features.
Note 1: The four standards are (a) ANSI X3T
9. 5, containing Physical Media Dependent (PMD) specifications, (b) ANSI… (Read More →)

See bus.

A telecommunications cable in which one or more optical fibers are used as the propagation medium. [After 2196]
Note 1: The optical fibers are surrounded by buffers, strength members, and jackets for protection, stiffness, and strength.
Note 2: A fiber-optic cable may be an all-fiber cable, or contain both optical fibers and metallic conductors. One possible use for the metallic… (Read More →)

See optical isolator.

A communications link that transmits signals by means of modulated light propagated in an optical fiber.

The branch of optical technology concerned with the transmission of light through fibers made of transparent materials such as glasses and plastics. [2196]
Note 1: Telecommunications applications of fiber optics use flexible low-loss fibers, using a single fiber per optical path. Present-day plastic fibers have losses that are too high for telecommunications applications.
Note 2: Various industrial and medical applications… (Read More →)

See pigtail.

Typically either a VDSLx or Hybrid Fiber Coax type architecture. Fiber is run to within a few hundred feet of the homes and then either the existing twisted pair or coax is used to pump the signal into the house.