Apparatus for compensating for dispersion in submarine optical a

Details Apparatus for compensating for dispersion in submarine optical a Apparatus for compensating for dispersion in submarine optical a

1996-03-18

1998-08-11

Palmer, Phan T. H.

Optical waveguides

Optical transmission cable

385 27, 385 24, 385 31, 359333, 359341, G02B 644

Patent

active

057939179

ABSTRACT:
A dispersion compensating apparatus compensates for a dispersion which occurs in a submarine optical fiber transmission system that operates on optical amplification relay principles for the purpose of easily repairing an optical fiber cable and dispersion compensating cables. A plurality of optical amplifiers are placed in the optical fiber cable. The dispersion compensating cables are housed in the casing of each of those of the optical amplifiers which are positioned at dispersion compensating intervals over the optical fiber cable. The dispersion compensating intervals range from about 500 to 1000 km, for example, with a certain tolerance. The optical amplifiers are positioned at intervals of several tens km, for example, and are located within that tolerance. Each of the dispersion compensating fibers has a length in the range of from 20 to 30 km, and is wound around a bobbin.

REFERENCES:
patent: 5559920 (1996-09-01), Chraplyvy et al.

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