Method and system for transmitting information in an optical communication system with low signal distortion

An optical communication system, comprising:

• means for transmitting an optical information signal at a wavelength over an optical link with a first end and a second end;
• means for pre-distorting for dispersion the optical information signal proximate the first end of the optical link to introduce an initial dispersion in the optical signal in the amount of at least 1000 picoseconds per nanometer (ps/nm), wherein this initial dispersion causes a widening of optical pulses of the optical signal;
• means for amplifying the optical signal in-line on the optical link between a transmitter and a receiver without the use of any in-line dispersion compensating modules;
• and
• means for compensating for dispersion the optical information signal proximate the second end of the optical link, wherein the pre-distortion and the compensation have opposite polarity at the transmitting wavelength and wherein the compensation is in the amount of at least 10,000 ps/nm.

A optical communication system, comprising:

• an optical link with a first end and a second end;
• a first dispersion device proximate the first end of the optical link configured to pre-distort optical information signals transmitted over the optical link to introduce an initial dispersion in the optical information signals in the amount of at least 1000 picoseconds per nanometer (ps/nm), wherein this initial dispersion causes a widening of optical pulses of the optical information signals;
• a plurality of amplifiers configured to amplify the optical signal in-line on the optical link without the use of any in-line dispersion compensating modules;
• and
• a second dispersion device proximate the second end of the optical link configured to compensate for dispersion in the optical information signals in the amount of at least 10,000 ps/nm, wherein the first and second dispersion devices have opposite polarities of dispersion.

An optical communication system, comprising:

• a transmitter operable to multiplex a plurality of optical information signals and generate wavelength division multiplexed (WDM) signals;
• an optical link operable to transmit the WDM signals, wherein the transmitter is coupled to one end of the optical link and a receiver is coupled to the other end;
• a first dispersion device fiber coupled to the optical link proximate the transmitter with a polarity the same as the optical link operable to pre-distort the WDM signal to introduce an initial dispersion in the WDM signal in the amount of at least 1000 picoseconds per nanometer (ps/nm), wherein this initial dispersion causes a widening of optical pulses of the WDM signal;
• a plurality of in-line amplifiers without dispersion compensating modules coupled to the optical link;
• a second dispersion device coupled to the optical link proximate the receiver with a polarity opposite the optical link operable to compensate for dispersion in the WDM signals in the amount of at least 10,000 ps/nm;
• and
• the receiver operable to demultiplex the WDM signals.