Related Experiment Video
Updated: Aug 16, 2026

Design and Fabrication of an Optical Fiber Made of Water
Published on: November 8, 2018
Fiber-coupling efficiency for free-space optical communication through atmospheric turbulence
Yamaç Dikmelik1, Frederic M Davidson
1Department of Electrical and Computer Engineering, Johns Hopkins University, 105 Barton Hall, 3400 North Charles Street, Baltimore, Maryland 21218, USA. yamac@jhu.edu
Abstract:
High-speed free-space optical communication systems have recently used fiber-optic components. The received laser beam in such a system must be coupled into a single-mode fiber at the input of the receiver module. However, propagation through atmospheric turbulence degrades the spatial coherence of a laser beam and limits the fiber-coupling efficiency. We numerically evaluate the fiber-coupling efficiency for laser light distorted by atmospheric turbulence. We also investigate the use of a coherent fiber array as a receiver structure and find that a coherent fiber array that consists of seven subapertures would significantly increase the fiber-coupling efficiency.
Related Concept Videos
Propagation Speed of Electromagnetic Waves
Transmission Line Design Considerations
Energy Stored In A Coaxial Cable
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
Propagation of Waves
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
Lossless Lines

