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Optical Network Link Budgets

Optical Network Link Budgets . EE 548 Spring 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)

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Optical Network Link Budgets

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  1. Optical Network Link Budgets EE 548 Spring 2005

  2. Reference Model

  3. Link types

  4. Link budget considerations • Laser power • Laser line width • Link losses • Bit rate • Detector sensitivity

  5. Impairments • Connector and splice losses • Fiber attenuation • Polarization mode dispersion (PMD) • Chromatic dispersion • Filter losses • Splitter losses • Isolator losses

  6. Short haul link

  7. 100 km, 8 wavelength WDM channels, 2.5 Gb/s

  8. Long haul network case study

  9. Long haul (LH) Amplifier spacing: 80-120 km Regenerator spacing: 400-600 km Capacity: 80x10Gb/s Cost: $$ Ultra long haul (ULH) Amplifier spacing: 80-120 km Regenerator spacing: 2500-4000 km Capacity: 56x10Gb/s Cost: $$$ Long haul versus ultra long haul WDM systems

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