310 likes | 449 Views
Outline. History of lightwave undersea cable systems Optical amplifier technologies Examples of lightwave undersea cable networks TPC-5CN APCN FLAG JIH Future technologies WDM Optical Soliton. Transmission capacity of the undersea cable systems in the Pacific ocean.
E N D
Outline • History of lightwave undersea cable systems • Optical amplifier technologies • Examples of lightwave undersea cable networks • TPC-5CN • APCN • FLAG • JIH • Future technologies • WDM • Optical Soliton
Transmission capacity of the underseacable systems in the Pacific ocean
Transmission loss characteristics of the SiO2 based optical fiber
Basic system configuration of the lightwave undersea cable system
Outline • History of lightwave undersea cable systems • Optical amplifier technologies • Examples of lightwave undersea cable networks • TPC-5CN • APCN • FLAG • JIH • Future technologies • WDM • Optical Soliton
Principle of the Erbium-doped fiber optical amplifier (EDFA)
Example of electro-optic repeater and EDFA Electro-optic repeater EDFA
Technical difficulties of the lightwave undersea systems using EDFA repeater • Optical noise (ASE) accumulation • Chromatic dispersion of the transmission fiber • Nonlinearity of the transmission fiber • Polarization dependent factors • Polarization dependent loss (PDL) • Polarization hole burning (PHB) • Polarization mode dispersion (PMD)
Test bed of the lightwave undersea systems using EDFA repeater
Outline • History of lightwave undersea cable systems • Optical amplifier technologies • Examples of lightwave undersea cable networks • TPC-5CN • APCN • FLAG • JIH • Future technologies • WDM • Optical Soliton
Major system parameters of JIH cable(tentative) Key technology • Wavelength division multiplexing (WDM) • 100Gbit/s = N wavelength 10 or 5 or 2.5Gbit/s
Outline • History of lightwave undersea cable systems • Optical amplifier technologies • Examples of lightwave undersea cable networks • TPC-5CN • APCN • FLAG • JIH • Future technologies • WDM • Optical Soliton
Explanation of Wavelength Division Multiplexing (WDM) technology
Experimental setup of 5Gbit/s, 22WDM,9500km recirculating loop experiment
Transmission performance of 5Gbit/s, 22WDM,9500km recirculating loop experiment
Experimental setup of 20Gbit/s, 8100km straight line optical soliton transmission
Transmission performance of 20Gbit/s, 8100km straight line optical soliton transmission
Conclusion • Technologies of the global lightwave undersea cable networks are reviewed. • WDM and soliton are two key technologies of future undersea cable networks. • 100Gbit/s class lightwave communication system is already available under the laboratory condition, and will be available for the commercial use in early 21st century.