| US 7,542,677 B2 | ||
| Dispersion compensation method in optical communication system having optical add drop multiplexing capability | ||
| Motoyoshi Sekiya, Kawasaki (Japan); Kazuo Yamane, Kawasaki (Japan); Ryosuke Goto, Kawasaki (Japan); Satoru Okano, Hokkaido (Japan); and Takehito Okeno, Hokkaido (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Aug. 21, 2007, as Appl. No. 11/892,302. | ||
| Application 11/892302 is a continuation of application No. 10/404045, filed on Apr. 02, 2003, granted, now 7,274,878. | ||
| Claims priority of application No. 2002-117422 (JP), filed on Apr. 19, 2002. | ||
| Prior Publication US 2008/0002979 A1, Jan. 03, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04J 14/02 (2006.01); H04B 10/12 (2006.01); H04B 10/001 (2006.01) | ||
| U.S. Cl. 398—81 [398/147; 398/159] | 9 Claims |
| 1. A wavelength division multiplexing optical communication system comprising:
a transmitting-end terminal node and a receiving-end terminal node;
a wavelength division multiplexing optical communication transmission line including a plurality of spans each having an optical
fiber, the plurality of spans joining the transmitting-end terminal node and the receiving-end terminal node; and
a plurality of add drop multiplexing (OADM) nodes disposed on the wavelength division multiplexing optical communication transmission
line; wherein
when taking as a reference a residual dispersion target value between the transmitting-end terminal node and the receiving-end
terminal node, a residual dispersion target value for a node segment between one of the terminal nodes and one of the add
drop multiplexing (OADM) nodes and a residual dispersion target value for a node-to-node segment between two of the add drop
multiplexing (OADM) nodes are set so as to be proportional to ratios of the dispersion in the node segment and in the node-to-node
segment, respectively, to the total dispersion between the transmitting-end and receiving-end terminal nodes.
|