Optical transmission system

Details Optical transmission system Optical transmission system

1995-08-31

1997-06-24

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359179, 359341, H04B 1000

Patent

active

056422156

ABSTRACT:
An optical transmission system which permits long-distance, ultrafast, high-capacity optical soliton transmission by suppressing timing jitter with simple means. In an optical transmission system which uses a transmission line composed of an optical fiber for transmitting therethrough a lightwave signal having digital information added to a return-to-zero lightwave pulse and a plurality of optical amplifying repeaters for compensating for losses by the optical fiber and in which the pulse compression effect by the nonlinear optical effect on the optical pulse and the pulse expansion effect by the dispersion effect are compensated, at least one optical band limited element which has a flat group delay characteristic near the center frequency is disposed in the transmission line at intervals of a period Z equal to the soliton period Z.sub.sol and the product, aB.sub.sol.spsb.2, of the curvature a of the product of the intensity transfer funtions of the optical band limited elements in the vicinity of the center frequency in the soliton period and the square of the full width at half maximum, B.sub.sol, of the spectrum of the lightwave pulse to be transmitted is set to a value in the range of 2.1.times.10.sup.-2 to 8.3.times.10.sup.-2.

REFERENCES:
patent: 5473458 (1995-12-01), Mamyshev et al.
patent: 5521738 (1996-05-01), Froberg et al.
patent: 5523874 (1996-06-01), Epworth
Mollenauer et al, Demonstration of Error-Free Soliton Transmission at 2.5 Gbit/s Over More Than 14000 km, Electronic Letters Oct. 24,1991 vol. 22 pp. 2055-2056.
Yamada et al, 10 Gbit/s Single-Pass Soliton Transmission Over 1000km, Electronics Letters Jul. 4,1991 vol. 27 No. 14 pp. 1289-1291.
Suzuki et al, Feasibility Demonstration of 20 Gbit/s Single Channel Soliton Transmission Over 11500km Using Alternating-Amplitude Solitons, Electronics Letters Jun. 23,1994 vol. 30 No. 13 pp. 1083-1084.
Kodama et al, Generation of Asymptotically Stable Optical Solitions and Suppression of the Gordon-Haus Effect, Optics Letters, vol. 17 No. 1 Jan. 1,1992 pp. 31-33.

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