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.

An undesired discrete frequency appearing in a transmission channel.
Note: The single-tone interference frequency is the frequency that appears in the channel regardless of the nature of the source.

1. An absorber of energy.
2. In communications, a device that receives information, control, or other signals from a source.
3. A location at which a specified multiplex structure is terminated through connected equipment removing the frame alignment signal and disassembling the channel time slots. [T1.107-1988]