G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/036 (2006.01) H04B 10/18 (2006.01) G02B 6/34 (2006.01)
Patent
CA 2357652
There is provided an optical fiber for flattening a dispersion slope in a transmission wavelength band and suitable for high bit-rate and high capacity WDM transmission in a wide range. In this optical fiber, conditions of 0.8%<=.DELTA.1<=3.0%, -0.7%<=.DELTA.2<=-0.4%, and 0.2%<=.DELTA.3<=0.5% are satisfied when a relative refractive index difference of the first core with respect to the clad is set to .DELTA.1, a relative refractive index difference of the second core with respect to the clad is set to .DELTA.2, and a relative refractive index difference of the third core with respect to the clad is set to .DELTA.3. A cable cutoff wavelength lies on a short wavelength side from 1520 nm. Further, relations of S < 0 and 0 <(D/S)<=200 are satisfied in a specific set wavelength band having a range width of not less than 20 nm within a wavelength band of 1.5 µm when a chromatic dispersion at a specific wavelength within the wavelength band of 1.5 µm is set to D (ps/nm/km) and a dispersion slope is set to S (ps/nm2/km).
Sugizaki Ryuichi
Yagi Takeshi
Freedman & Associates
The Furukawa Electric Co. Ltd
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