1. A functional unit that can only process data of a single security level at a particular time. [2382-pt.8]
2. [An] information system (IS) device not trusted to properly maintain and separate data to different security levels. [INFOSEC-99]
3. A device that is used to process data of a single security level at any one time. Since the device need… (Read More →)

Synonym single-mode optical fiber.

1. An optical fiber in which only the lowest order bound mode can propagate at the wavelength of interest.
Note 1: The lowest order bound mode is ascertained for the wavelength of interest by solving Maxwell's equations for the boundary conditions imposed by the fiber, e.g., core (spot) size and the refractive indices of the core and cladding.
Note 2:… (Read More →)

Synonym single-mode optical fiber.

Synonym neutral direct-current telegraph system.

An antenna that radiates or receives radio waves with a specific polarization.
Note: For a singly polarized antenna, the desired sense of polarization is usually maintained only for certain directions or within the major portion of the radiation pattern.

An amplitude modulated emission with one sideband only. [NTIA] [RR]

The power of one of two equal tones that, when used together to modulate a transmitter, cause it to develop its full rated peak power output.

Sideband transmission in which only one sideband is transmitted.
Note: The carrier may be suppressed.

Single-sideband transmission in which the carrier is suppressed.
Note: In SSB-SC the carrier power level is suppressed to the point where it is insufficient to demodulate the signal.