Single-mode optical fiber
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In fiber-optic communication, a single-mode optical fiber, also known as fundamental- or mono-mode, is an optical fiber designed to carry only a single mode of light - the transverse mode. Modes are t
Cross section of a single-mode optical fiber patch cord end, taken with a fiberscope. The outermost circle is the cladding, 125 μm in diameter. Debris is visible as a streak on the cross-section, and glows due to the illumination.
Multi-mode optical fiber
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Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus. Multi-mode links can be used for data rates up to 800
Single-mode optical fiber
…In September 1970, they announced they had made single-mode fibers with attenuation at the 633-nanometer helium-neon line below 20 dB/km. Unlike multi-mode optical fiber, single-mode fiber does not exhibit modal dispersion. This is due to the fiber having such a small cross section that only the first mode is transported…
A stripped multi-mode fiber