SOLITON BASED OPTICAL COMMUNICATION Presented by Alfin Thomas
SOLITON BASED OPTICAL COMMUNICATION Presented by, Alfin Thomas
Introduction �What is Optical Communication? �Advantages &Disadvantages of Optical Communication �Optical soliton �Soliton based transmission �Advantages & Disadvantages of soliton �Conclusion �References
What is Optical Communication? �The communication in which light is used to carry the signal to remote end instead of electric current �Optical Communication relies on optical fibers to carry signals to the destination
Cont. . .
Advantages & Disadvantages of Optical Communication ADVANTAGES DISADVANTAGES Long distance transmission due to low attenuation OFC is delicate so has o be handlled carefully Small size and low weight Communication is not totally in optical domain, so repeated electrical-opticalelectrical conversion is needed Larger information capacity due to wider bandwidth
Optical Soliton �Solitons are very narrow, high intensity stable optical pulses. �High peak power and special shapes �During propogation, the shape of soliton remains unchanged. � Soliton pulses reduce the effect of chromatic dispersions. �Chromatic dispersions: 1. Group velocity dispersion 2. Self phase modulation
Cont. . .
Cont. . . �Group velocity dispersion
Cont. . . �Self phase modulation
Criteria to be satisfied for the soliton �Appropriate peak power �Should be unchirped
Soliton based transmission
Advantages and Disdavantages �Advantages: 1. Dispersions are reduced 2. Pulse shape can be maintained 3. Transmission speed can be increased 4. Opens the way to ultrahigh speed superhighways
Cont. . . . �Disadvantage: • Proper power maintenance is a critical issue
Conclusion �Soliton based optical fiber communication systems are more suitable for long haul communication because of their very high information carrying capacity.
References �R. Ganapathy, K. Porsezian, A. Hasegawa, Life Fellow, IEEE, and V. N. Serkin, “Soliton Interaction Under Soliton Dispersion Management’’, IEEE journal of quantum electronics, Vol. 44, NO. 4, April 2008. [7] � David S. Ricketts, Member, IEEE, Xiaofeng Li, Student Member, IEEE, “On the Self-Generation of Electrical Soliton Pulses’’, IEEE journal of solid-state circuits, Vol. 42, NO. 8, August 2007
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