H - Electricity
04
B
H04B 10/18 (2006.01) G02B 6/036 (2006.01)
Patent
CA 2325230
An optical fiber that can sufficiently suppress the generation of four-wave mixing and that can widen the bandwidth of wavelength of signal light. The optical fiber of the present invention has (a) a chromatic dispersion whose absolute value is not less than 8 ps~nm -1~km -1 and not more than 15 ps~nm 1-km 1- at a wavelength of 1.55 µm and (b) a dispersion slope whose absolute value is not more than 0.05 ps~nm -2~km -1 at a wavelength of 1.55 µm. It is more desirable that the optical fiber have (a) a chromatic dispersion whose absolute value is not less than 8 ps ~ nm -1~km -1 and not more than 12 ps~nm -1~km -1 at a wavelength of 1.55 µm, (b) a dispersion slope whose absolute value is not more than 0.03 ps~nm -2~km -1 at a wavelength of 1.55 µm, (c) a chromatic dispersion whose absolute value is not less than 5 ps~nm -1~km -1 at wavelengths between 1.45 and 1.65 µm, (d) an effec- tive area not less than 45 µm2 at a wavelength of 1.55 µm, and (e) a two- meter cutoff wavelength not less than 1.40 µm.
Kato Takatoshi
Kubo Yuji
Onishi Masashi
Marks & Clerk
Sumitomo Electric Industries Ltd.
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