OPTICAL TRANSMISSION SYSTEM USING AN OPTICAL PHASE CONJUGATION DEVICE

摘要

An optical system (10) comprises an optical fiber path (12) suitable for propagating an optical signal at least in a first direction, and a plurality M of optical amplifiers (13<1>... 13<6>), disposed along said optical fiber path (12), so as to divide said optical fiber path in N spans of optical fiber (14<1>... 14<5>). The spans of optical fiber have all substantially a length Lamp and comprise at least one transmission optical fiber having an effective length Leff. An optical phase conjugation device (15) is associated to one of the amplifiers of said plurality of amplifiers, and is disposed in combination with a dispersion compensator (16). The compensator (16) is disposed upstream from the amplifier associated to the optical phase conjugated device (15), and is adapted for introducing an accumulated dispersion such as to substantially compensate the dispersion accumulated in a portion having a length (Lamp - Leff of the span immediately upstream from the amplifier associated to said optical phase conjugation device (15).