Wavelength-multiplexing optical communication method employing R

Details Wavelength-multiplexing optical communication method employing R Wavelength-multiplexing optical communication method employing R

1996-12-17

1999-02-23

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359161, H04J 1402

Patent

active

058750452

ABSTRACT:
An RZ (return-to-zero) signal mode is adopted as a transmission coding format, whereby the effect of cross phase modulation is suppressed. The duty factor of each of signal light waves is allowed to vary at a digital signal processing stage, whereby the average power levels of the signal light waves are controlled so as to become constant in an optical repeater, with the result that the peak power levels of the signal light waves are allowed to vary. In consequence, the transmission characteristics of the signal light waves can be varied.

REFERENCES:
patent: 5574590 (1996-11-01), Edagawa et al.
patent: 5589969 (1996-12-01), Taga et al.
Terahara et al. "85 Gbit/s WDM transmission of 16 5-3 Gbit/s RZ data signals over 7931 km using accurate gain-equalization and pre-compensation of group-velocity dispension" Electronics Letters, 1997, vol. 33, No. 7, pp. 603-605.

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