TIA's Glossary of Telecommunication Terms
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minimum-dispersion window
1. The window of an optical fiber at which material dispersion is very small. Note 1: In silica-based fibers, the minimum-dispersion window occurs at a wavelength of approximately 1.3 
m. Note 2: The minimum-dispersion window may be shifted toward the minimum-loss window, i.e. , 1.55 m, by the addition of dopants during manufacture. [After FAA] 2 . In a single-mode fiber, the window or, in the case of doubly or quadruply clad fibers, windows, at which material and waveguide dispersion cancel one another, resulting in extremely wide bandwidth, i.e. , extremely low dispersion, over a very narrow range of wavelengths. [After FAA] Synonym zero dispersion window .