Optical method of transmitting digital data

Details Optical method of transmitting digital data Optical method of transmitting digital data

1997-02-21

1999-07-06

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359186, H04B 1004

Patent

active

059204168

ABSTRACT:
To increase the transmission length in an optical fiber, a method of transmitting digital data uses both power modulation and phase modulation of an optical carrier. To compensate the chromatic dispersion produced by the fiber, a phase-shift is applied to the wave within each time cell in which the optical power is low and that precedes or follows a cell in which the power is high. Applications include long-distance optical transmission using standard fibers.

REFERENCES:
patent: 5373382 (1994-12-01), Pirio et al.
K. Yonenaga et al, "Optical Duobinary Transmission System with No Receiver Sensitivity Degradation", Electronics Letters, vol. 31, No. 4, Feb. 16, 1995, pp. 302-304.

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