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glossary

Fiber optic: long cylindrical optical component guiding light
Single mode fiber optic: fiber optic enabling the propagation of only one transverse mode ( the fundamental mode )
Chromatic dispersion ( fiber optic ): duration broadening of a light pulse propagating in a fiber optic and caused by the dependance on the wavelength of the group velocity
Chromatic dispersion factor ( fiber optic ): expresses the chromatic dispersion of a light pulse with a 1 nm linewidth and propagating in a 1 km long fiber optic
Spectral width: difference between the largest and smallest wavelengths (frequencies) of the spectrum emitted by a light source, transmitted by an optical system or detected by a photodetector, etc.; the largest and smallest wavelengths (frequencies) are often defined at Full Width Half Maximum (FWHM)