In telecommunication, the term zero-dispersion wavelength has the following meanings:
1. In a single-mode optical fiber, the wavelength or wavelengths at which material dispersion and waveguide dispersion cancel one another.
Note: In all silica-based optical fibers, minimum material dispersion occurs naturally at a wavelength of approximately 1.3 μm. Zero-dispersion wavelength Single-mode fibers may be made of silica-based glasses containing dopants that shift the material-dispersion wavelength, and thus, the zero-dispersion wavelength, toward the minimum-loss window at approximately 1.55 μm. The engineering tradeoff is a slight increase in the minimum attenuation coefficient.
2. Loosely, in a multimode optical fiber, the wavelength at which material dispersion is minimum, i.e. essentially zero. Synonym minimum-dispersion wavelength.
Source: from Federal Standard 1037C
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Electronics Topics
The field of electronics is the study and use of systems that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors. The design and construction of electronic circuits to solve practical problems is part of the fields of electronic engineering, and the hardware design side of computer engineering. The study of new semiconductor devices and their technology is sometimes considered as a branch of physics.
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