A fiber optic system physical configuration that employs two fibers, one for transmission in each direction. Passive optical network (PON) standards, for example, include a duplex configuration option. See also PON and simplex.
Webster's New World Telecom
Other Word Forms of Duplex
Origin of Duplex
From Latinduplex (“double, two-fold”), from duo (“two”) + plico (“fold together”), from Ancient Greek πλέκω (pleko, “twist, braid”).
American Heritage Dictionary of the English Language, 5th Edition
Duplex Sentence Examples
Grubb's duplex micrometer is described in the 9th edition of the Encyclopaedia Britannica.
Typically they are steam pumps, the steam and water cylinders being set tandem on the same bed frame, generally without fly-wheel or other rotary parts; they may be single cylinder or duplex, simple, compound or triple expansion, and having a higher speed of stroke are smaller in all their parts than Cornish pumps.
This printer enables two-sided printing with an optional duplex unit.
In 1896 it was arranged to lay two new cables to France and one (for duplex working) to Germany.
His festival is observed on that anniversary by the entire Roman Catholic Church as a semi-duplex, and by the Spanish Catholics as a duplex of the first class with an octave.