Optical communication apparatus

Details Optical communication apparatus Optical communication apparatus

1995-12-01

1997-10-07

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359134, 359160, 359173, 359179, 385122, H04B 1000

Patent

active

056754280

ABSTRACT:
It is an object of the invention to provide an optical communication system, which suppresses wave distortions of signal light waves arisen from group velocity dispersion of a transmission line. The optical communication apparatus comprises optical transmitter 100 and optical transmission lines, which consist of optical fibers. The optical transmitter transmits signal and probe light waves simultaneously, and spectrum-inverted wave is generated by nonlinear interaction between the two said waves in the optical nonlinear section. The spectrum inverted wave behaves as a phase conjugated wave, and wave distortion arisen from dispersion of a line can be remarkable decreased when a signal light wave arrives at the terminal of a line. The optical transmitter comprises two light wave sources for signal and probe light waves, and thereby wavelength separation and polarizations of these waves can be stabilized without difficulty.

REFERENCES:
patent: 5365362 (1994-11-01), Gnauck et al.
patent: 5386314 (1995-01-01), Jopson
Electronics Letters, vol. 25, No. 11, May 25, 1989, pp. 702-703, Fujita et al.: "10Gbit/s, 100km optical fibre transmission experiment using high-speed MQW DFB-LD and back-illuminated GaInAs APD".
Optics Letters, vol. 4, Feb. 1979, pp. 52-54, A. Yariv et al.: "Compensation for channel dispersion by nonlinear optical phase conjugation".
Electronics Letters, vol. 29, No. 7, Apr. 1, 1993, pp. 576-578, R.M. Jopson et al.: "Compensation of fibre chromatic dispersion by spectral inversion" .

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