Dispersion-compensating optical fiber, and, optical transmission line and dispersion-compensating module respectively including the same
AssigneeSumitomo Electric Industries, Ltd.
InventorsTakatoshi Kato, Masaaki Hirano
Life of this patent
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Abstract
The invention is directed to a dispersion-compensating optical fiber which can compensate for the chromatic dispersion and dispersion slope of a non-zero dispersion-shifted optical fiber by a short length. The dispersion-shifted optical fiber constitutes an optical transmission line together with a dispersion-compensating optical fiber fusion-spliced thereto. The dispersion-compensating optical fiber has, at a wavelength of 1550 nm, a chromatic dispersion DDCF of −40 ps/nm/km or less and a ratio (DDCF/SDCF) of dispersion slope SDCF to the chromatic dispersion DDCF of 0.005/nm or more.
Claims31
A dispersion-compensating optical fiber having a core region extending along a predetermined axis and a cladding region surrounding around the outer periphery of said core region, said dispersion-compensating optical fiber having, at a wavelength of 1550 nm, characteristics of:
- a chromatic dispersion DDCF of −40 ps/nm/km or less;
- and
- a ratio (SDCF/DDCF) of dispersion slope SDCF to the chromatic dispersion DDCF of 0.005/nm or more.
A dispersion-compensating optical fiber having a core region extending along a predetermined axis and a cladding region surrounding around the outer periphery of said core region, said dispersion-compensating optical fiber having, at a wavelength of 1550 nm, characteristics of:
- a chromatic dispersion DDCF of −40 ps/nm/km or less;
- a ratio (SDCF/DDCF) of dispersion slope SDCF to the chromatic dispersion DDCF of 0.005/nm or more;
- and
- an effective area of 16 μm2 or more.
A dispersion-compensating optical fiber having a core region extending along a predetermined axis and a cladding region surrounding around the outer periphery of said core region, said dispersion-compensating optical fiber, having, at a wavelength of 1550 nm, characteristics of:
- a chromatic dispersion DDCF of −40 ps/nm/km or less;
- a ratio (SDCF/DDCF) of dispersion slope SDCF to the chromatic dispersion DDCF of 0.005/nm or more;
- and
- a transmission loss of 0.5 dB/km or less.
Dependencies are inferred from the claim text.