optical network link budgets ee 548 spring 2005. reference model
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Optical Network Link Budgets
EE 548Spring 2005
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Reference Model
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Link types
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Link budget considerations Laser power Laser line width Link losses Bit rate Detector sensitivity
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Impairments Connector and splice losses Fiber attenuation Polarization mode dispersion (PMD) Chromatic dispersion Filter losses Splitter losses Isolator losses
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Short haul link
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100 km, 8 wavelength WDM channels, 2.5 Gb/s
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Long haul network case study
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Long haul versus ultra long haul WDM systems Long haul (LH)
Amplifier spacing: 80-120 km
Regenerator spacing: 400-600 km
Capacity: 80x10Gb/s
Cost: $$
Ultra long haul (ULH) Amplifier spacing:
80-120 km Regenerator
spacing: 2500-4000 km
Capacity: 56x10Gb/s
Cost: $$$
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