optical network link budgets ee 548 spring 2005. reference model
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Optical Network Link Budgets
EE 548Spring 2005
Reference Model
Link types
Link budget considerations Laser power Laser line width Link losses Bit rate Detector sensitivity
Impairments Connector and splice losses Fiber attenuation Polarization mode dispersion (PMD) Chromatic dispersion Filter losses Splitter losses Isolator losses
Short haul link
100 km, 8 wavelength WDM channels, 2.5 Gb/s
Long haul network case study
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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