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US 2002/0164117 A1Published application
Optical fiber transmission-line
AssigneeSumitomo Electric Industries, Ltd.
InventorsMasashi Onishi, Eisuke Sasaoka
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AssigneeSumitomo Electric Industries, Ltd.
InventorsMasashi Onishi, Eisuke Sasaoka
Estimating the term…
A dispersion-managed optical fiber transmission-line with which the formation of side bands around the optical signal wavelength can be suppressed even when carrying out high-speed signal transmission. An optical fiber transmission-line 1 constitutes one repeater span installed between a transmitter (or repeater) 2 and a receiver (or repeater) 3 and is made up of N sections 41 through 4N in sequence from the transmitter 2 to the receiver 3. The chromatic dispersion at the wavelength 1.55 μm is positive in the sections 4n where the value of n is odd and is negative in the sections 4n where the value of n is even. The ratio between the maximum value and the minimum value of the average chromatic dispersions Dn of the sections 4n is at least 1.3 and not greater than 10.0.
An optical fiber transmission-line constituting a single repeater span in which sections where the chromatic dispersion at a predetermined wavelength is positive and sections where it is negative are provided alternately, wherein the ratio between the maximum value and the minimum value among the absolute values of the average chromatic dispersions of the sections is not less than 1.3 and not greater than 10.0.
An optical fiber transmission-line constituting a single repeater span in which sections where the chromatic dispersion at a predetermined wavelength is positive and sections where it is negative are provided alternately, wherein the number of sections of which the absolute value of the average chromatic dispersion differs by not less than 10% from that of an adjacent section is at least half of the total number of sections.
An optical fiber transmission-line constituting a single repeater span in which sections where the chromatic dispersion at a predetermined wavelength is positive and sections where it is negative are provided alternately, wherein the number of sections of which the absolute value of the average chromatic dispersion differs by not less than 0.5 ps/nm/km from that of an adjacent section is at least half of the total number of sections.
An optical fiber transmission-line constituting a single repeater span in which sections where the chromatic dispersion at a predetermined wavelength is positive and sections where it is negative are provided alternately, wherein for any two sections the absolute value of the average chromatic dispersion of the section nearer the optical signal input end of the repeater span is larger than the absolute value of the average chromatic dispersion of the section nearer the optical signal output end and the absolute value of the average chromatic dispersion of the section at the output end is not less than 1 ps/nm/km.
Dependencies are inferred from the claim text.