Comparison of the Noise Penalty of a Raman Amplifier Versus an Erbium-doped Fiber Amplifier for Long-haul Analog Fiber-optic Links

Abstract

A Raman amplifier is compared to an erbium-doped fiber amplifier for a 14 km analog fiber-optic link requiring the amplifier pump at the end of the link. The noise penalty for each amplifier at a given photocurrent is measured and compared. An analytical expression comparing the analog metrics as a function of noise penalty and photocurrent for different amplifiers is derived and used. The Raman amplifier has a lower noise penalty performance for a long-haul analog fiber-optic link versus an erbium-doped fiber amplifier placed at the end of the link. The best compromise comes from a hybrid amplifier, which combines the Raman amplifier with the erbium-doped fiber amplifier and offers the best RF performance while taking only a minimal penalty on the RF noise figure and spurious free dynamic range.

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Document Details

Document Type
Technical Report
Publication Date
Dec 17, 2008
Accession Number
ADA491951

Entities

People

  • John F. Diehl
  • Keith J. Williams
  • Preetpaul S. Devgan
  • Vincent J. Urick

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Amplifiers
  • Detection
  • Distributed Amplifiers
  • Distributed Feedback Lasers
  • Dynamic Range
  • Energy Consumption
  • Femtosecond Time
  • Frequency
  • Lasers
  • Microwave Photonics
  • Quantum Cascade Lasers
  • Radio Frequency Amplifiers
  • Raman Scattering
  • Scattering
  • Semiconductor Lasers
  • Semiconductors
  • Shot Noise

Fields of Study

  • Physics

Readers

  • Integrated Circuit Design and Technology.
  • Operations Research
  • Optical Physics and Photonics.