G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/10 (2006.01) H04B 10/18 (2006.01) H04J 14/02 (2006.01)
Patent
CA 2157828
The present invention is intended to provide a dispersion compensating optical fiber for wavelength division multiplex optical communication. A refractive index distribution of the dispersion compensating optical fiber is set to be W-shaped, an outside of a core is formed as an internal clad layer and the outside of the internal clad layer is formed as an outermost clad layer made of pure silica. Germanium for raising the refractive index by 2.8 % in a specific refractive index difference is doped in the core, and fluorine is uniformly doped in the internal clad layer so that the refractive index is reduced by 0.45 % in the specific refractive index difference. A diameter ratio of the core and the internal clad layer is set to be in a range of 1:1.5 to 1:4.0, a wavelength dispersion slope is set to be in a negative area, and dispersion is controlled to a negative high dispersion structure of-100 ps/km-nm or under.
Akasaka Youichi
Kokura Kunio
Sugizaki Ryuichi
Umeda Atsushi
Akasaka Youichi
Freedman Gordon
Kokura Kunio
Sugizaki Ryuichi
The Furukawa Electric Co. Ltd.
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