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Open-source NSE Codes Applied to 40 Gbit/s Soliton Lines

Open-source NSE Codes Applied to 40 Gbit/s Soliton Lines. KAZUHIRO SHIMOURA Kansai Electric Power Co., Japan ECOC2001 ( Oct. 4, 2001 RAI Congress Centre, Amsterdam,The Netherlands ). CONTENTS. Q-map method and Open-source Code Simulation Reference System

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Open-source NSE Codes Applied to 40 Gbit/s Soliton Lines

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  1. Open-source NSE Codes Applied to 40 Gbit/s Soliton Lines KAZUHIRO SHIMOURA Kansai Electric Power Co., Japan ECOC2001 ( Oct. 4, 2001 RAI Congress Centre, Amsterdam,The Netherlands )

  2. CONTENTS • Q-map method and Open-source Code • Simulation Reference System • 40 Gbit/s Soliton line design by Q-maps • Optimal strength of dispersion management • Average-dispersion and signal-power design • Merit of the 40 Gbit/s soliton system

  3. Nonlinear Schrödinger Equation ( by Akira Hasegawa 1973 ) Linear Non Linear Chirped Gaussian Pulse

  4. Split Step Fourier Method( by Fred Tappert 1971 ) Calculated by Mathematica Ver.4 on Win2000

  5. Personal NSE Simulation System

  6. Simulation Reference System

  7. Q-factor definition for RZ-pulse

  8. Dispersion map of the simulation model(Periodical dispersion compensation scheme)

  9. Pulse widths vibration in the DM-lines( 40Gbit/s, Dc=±20ps/nm, Lc=100km, with 6nm filters ) Global Structure Local Structure

  10. Q-maps for the 40 Gbit/s DM-Soliton Lines (Nc = 2, Pav=+5dBm, La = 50 km, Lt = 3 Mm) Dav – Dc plane Dav – Pav plane Optimal Dispersion Compensation: Dc = ±30 ps/nm

  11. Q-maps for the 40 Gbit/s DM-Soliton Lines (Nc = 4/6, Pav=+5dBm, La = 50 km, Lt = 3 Mm) Nc = 4 Nc = 6 Optimal Dispersion Compensation: Dc = ±30 ps/nm

  12. Q-maps for the 40 Gbit/s DM-Soliton Lines (Nc = 2, Pav=+5dBm, La = 30/80 km, Lt = 3 Mm) La=30km La=80km

  13. Q-maps for the 40 Gbit/s DM-Soliton Lines (Nc = 2, Pav=+5dBm, La = 30/80 km, Lt = 3 Mm) La=30km La=80km

  14. PMD suppression effect of soliton (Nc = 2, Pav=+5dBm, Dc=+30ps/nm, La = 50km, Lt = 3Mm) PMD = 0 ps/km0.5 PMD = 0.1 ps/km0.5

  15. Optimal S-parameter for the DM-line ( T. Yu, et. al., 1997 ) k = − ( λ2 / 2πc ) d = 1.27 D (ps/nm/km) Ts (ps) : FWHM at chirp-free point Dc = ±30 ps/nm, Ts = 6.8 ps  S = 1.65  S = 1.65 ( T. Yu, et. al., 1997 )

  16. Results of the 40Gbit/s simulation • Dispersion management strength • Dc = ±30 ±10 (ps/nm) : for all cases S = 1.65 • Signal Power and Dispersion • Dav = +0.04 ± 0.02(ps/nm/km) • Pav = +7 ± 2 (dBm) : for La = 50km case

  17. Experimental setup of the 80 Gbit/s, 800 km transmission

  18. Bit Error Rate for 8*10Gbit/s CH

  19. Merit of the soliton-based system • For Long distance transmission (Soliton stability effect, High intensity signal and suppressing PMD effect) • Conventional DSF without any dispersion slope compensation (Single Wavelength) • Narrow band low cost amplifier with Band pass filter is available. • Dispersion design is simple (Dc= ±30ps/nm) Low cost High capacity system is possible.

  20. You can download some code http://www.asahi-net.or.jp/~ix6k-smur/soliton.html

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