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Soliton Research at the Lightwave Communication Systems Laboratory

Soliton Research at the Lightwave Communication Systems Laboratory. Ken Demarest. Department of Electrical Engineering & Computer Science. University of Kansas. Summary. Introduction to optical solitons The KU soliton generator The KU recirculating loop

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Soliton Research at the Lightwave Communication Systems Laboratory

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  1. Soliton Research at the Lightwave Communication Systems Laboratory Ken Demarest Department of Electrical Engineering & Computer Science University of Kansas

  2. Summary • Introduction to optical solitons • The KU soliton generator • The KU recirculating loop • Preliminary soliton transmission results • Summary and suggestion for future work

  3. Optical Solitons An optical soliton is a short, high-amplitude an optical pulse that does not spread as it propagates

  4. Linear, Dispersive Fiber

  5. Kerr Effect and Chirp

  6. Nonlinear, Nondispersive fiber

  7. Nonlinear Fiber with Positive Dispersion

  8. Fundamental Soliton

  9. Soliton-based optical fiber transmission Achieved error free distances in single-channel and WDM

  10. Three Types of Soliton Generators 1. Soliton laser based on mode-locking 2. Electroabsorption Modulator-based soliton generators 3. LiNbO3 Mach-Zehnder Modulator-based soliton generators

  11. Mach-Zehnder Soliton Generator

  12. Amplitude Modulation

  13. Pulse Compression

  14. Structure and Operation

  15. KU Soliton Generator

  16. Mearsured Pulse Compression Compressed pulses Uncompressed pulses

  17. Soliton Source: Output Data Encoded Soliton Sequence Soliton Train

  18. 20GHz Time/polarization Division Multiplexed Soliton Train PM fiber Polarization of Incident Light

  19. Soliton Generator For WDM

  20. Recirculating Loop

  21. KU Recirculating Loop Testset

  22. OC48 Rate Transmission Emulation Standard Fiber 75 km: Error Free 600 km: Error Free (BER<2*10-13) 1050 km: BER=2*10-10 1350 km: BER=3*10-7

  23. Measured, Near-Soliton Characteristics 20 ps/div Transmitter 4*35 km 6*35 km Launch power: 8 dBm -2.5 dBm

  24. Future Work 1. Long-distance 10 Gb/s or time/polarization-division-multiplexed soliton transmission in alternating positive and negative dispersion fiber links. 2. 10 Gb/s or 20 Gb/s WDM transmission in dispersion- compensated standard fiber link with long amplifier spans. 3.Experimental demonstration of soliton control for all-optical networks.

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