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.
Claims39
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,
- said optical fiber having a positive dispersion slope at said zero-dispersion wavelength and an effective area of greater than 60 μm2 at a wavelength of 1.55 μm.
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 1.43 μm,
- said optical fiber having a positive dispersion slope at said zero-dispersion wavelength and an effective area of greater than 50 μm2 at a wavelength of 1.55 μm.
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 longer than 1.45 μm but not longer than 1.50 μm,
- said optical fiber having a positive dispersion slope at said zero-dispersion wavelength.
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,
- said optical fiber having a positive dispersion slope at said zero-dispersion wavelength and a bending loss which becomes 0.06 dB/turn or less at a wavelength of 1.55 μm when wound at a diameter of 32 mm.
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,
- said optical fiber having a positive dispersion slope at said zero-dispersion wavelength and a cutoff wavelength of 1.05 μm or more.
Dependencies are inferred from the claim text.