Super wide band single mode optical fiber

Abstract

Abstract PURPOSE:To enable wide band transmission characteristics to be obtained by using a core and a clad of a high refractice index difference and forming the core to an outside diameter corresponding to the refractive index difference. CONSTITUTION:The refractive index n1 of the core 1 constituting an optical fiber and the refractive index n2 of a clad 2 show a high refractive index difference and when the radius from the center of the core 1 toward the outer side is shown as (r), these assume, for example, a step type distribution. With such constitution, the diameter 2a of the core 1 is made to correspond to the refractive index difference between the core 1 and the clad 2; for example, in a wide band including the wavelengths at which the transmission losses of a quartz optical fiber become minimum, the entire dispersion is made within + or -1ps/Km/nm, and this enables super wide band super long distance transmission to be performed by WDM (wavelength multiplexing).

Inventors

• 👤 Katsunari Okamoto
• 👤 Takao Edahiro
• 👤 Akio Kawana
• 👤 Tetsuo Miya

Bibliographic Details