In order to improve laser communication link performance, turbulence strength is an important parameter to characterize the system’s correcting limits and detection availability. By setting an experimental optical link through free space horizontal propagation in a 1-km path, we study the strength of different turbulence scenarios through the Rytov approximation and scintillation of the beam, and compare methods of experimental detection of the refractive-index structure constant of the turbulence, Cn2. Results show that, under low and medium turbulence regimes, both methods behave similiarly as a way to predict Cn2; however, with larger turbulence strength, the beam’s displacements in the focal plane are more sensitive than the intensity fluctuactions.
|Title of host publication||Laser Communication and Propagation through the Atmosphere and Oceans XII|
|Editors||Jaime A. Anguita, Jeremy P. Bos, David T. Wayne|
|State||Published - 2023|
|Event||Laser Communication and Propagation through the Atmosphere and Oceans XII 2023 - San Diego, United States|
Duration: 22 Aug 2023 → 23 Aug 2023
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Conference||Laser Communication and Propagation through the Atmosphere and Oceans XII 2023|
|Period||22/08/23 → 23/08/23|
Bibliographical notePublisher Copyright:
© 2023 SPIE.
- Atmospheric turbulence
- Beam-wander measurements
- FSO communications