Optical fiber and optical transmission system including the same
AssigneeSumitomo Electric Industries, Ltd.
InventorsTakatoshi Kato, Eisuke Sasaoka, Shigeru Tanaka
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Abstract
The present invention relates to an optical fiber which enables favorable optical communications in 1.3-μm and 1.55-μm wavelength bands, and an optical transmission system including the same. The optical fiber according to the present invention has only one zero-dispersion wavelength within a wavelength range of 1.20 μm to 1.60 μm, the zero-dispersion wavelength existing within a wavelength range of 1.37 μm to 1.50 μm, and has a positive dispersion slope at the zero-dispersion wavelength, thereby enabling favorable optical communications utilizing each signal light in the 1.3-μm and 1.55-μm wavelength bands sandwiching the zero-dispersion wavelength.
Claims8
An optical fiber, having:
- only one zero-dispersion wavelength within a wavelength range of 1.20 μm to 1.60 μm, said zero-dispersion wavelength existing within a wavelength range of 1.37 μm to 1.50 μm;
- a positive dispersion slope at said zero-dispersion wavelength;
- and
- an increase in transmission loss, which is caused by OH absorption at a wavelength of 1.38 μm, of 0.1 dB/km or less.
Dependencies are inferred from the claim text.