A Comparison of Free-Space and Fiber Mixer Performances

Abstract

This report compares the heterodyne reception mixing efficiency of a laser radar employing a conventional Free-Space mixer to one employing a fiber mixer. A rigorous derivation for speckle targets shows the two mixing schemes will have approximately the same mixing efficiency. The fiber mixing efficiency is optimized by choosing the optics numerical aperture (NA) equal to the fiber NA. Laser radar, Heterodyne detection, Coherent detection, Fiber mixers.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1993
Accession Number
ADA273558

Entities

People

  • Martin B. Mark

Organizations

  • Wright Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Detection
  • Detectors
  • Dielectric Waveguides
  • Efficiency
  • Electro-Optics
  • Far Field
  • Focal Planes
  • Frequency
  • Governments
  • Heterodyne Detection
  • Laser Radar
  • Local Oscillators
  • Near Field
  • Numerical Aperture
  • Optics
  • Standards
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Optical Physics and Photonics.
  • Radio communications and signal processing.

Technology Areas

  • Directed Energy
  • Space
  • Space - Hall-Effect Thruster
  • Space - Space Objects