The Furukawa Electric Co., Ltd.

Shuhei Hayami

Mitsuhiro Kawasaki

Yohei Uchida

The present invention provides an optical fiber of which a zero dispersion wavelength falls within a range of between 1,250 nm and 1,350 nm inclusive, transmission loss at 1,550 nm is equal to or less than 0.185 dB/km, chromatic dispersion at 1,550 nm is within the range of 19&#xb1;1 ps/nm&#xb7;km, a dispersion slope at 1,550 nm is equal to or less than 0.06 ps/nm&#xb7;km, an effective area Ais equal to or more than 105 &#x3bc;m, a cable cutoff wavelength &#x3bb;is equal to or less than 1,530 nm, polarization mode dispersion is equal to or less than 0.1 ps/km, and a loss when the optical fiber is wound on a mandrel having an outer diameter of 20 mm is equal to or less than 10 dB/m.

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Tokyo, Japan

Shuhei Hayami