Multimode Laser Beam Field Correlations for Vertical Links Operating in Oceanic Turbulence

Gercekcioglu H., Baykal Y., Gökçe M. C.

IEEE Journal of Quantum Electronics, cilt.61, sa.3, 2025 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 61 Sayı: 3
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1109/jqe.2025.3568419
  • Dergi Adı: IEEE Journal of Quantum Electronics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Business Source Elite, Business Source Premier, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: coherence length, intensity, multimode beam, Oceanic turbulence, oceanic vertical link
  • TED Üniversitesi Adresli: Evet

Özet

In underwater optical vertical link medium, based on the extended Huygens-Fresnel principle, multimode laser beam field correlation is derived and evaluated analytically in the Atlantic Ocean at high latitude and high latitude- low latitudes. With the depth of seawater, the coherence length of a spherical wave operating in the underwater turbulent medium is demonstrated for the range of 0-4000 m. By utilizing the coherence length varying with parameters such as the rate of dissipation of turbulent kinetic energy per unit mass of fluid ε, the rate of dissipation of the mean squared temperature χT and nondimensional representing the relative strength of temperature and salinity fluctuations ω, which depend on depth, the field correlation is examined in detail for single modes and multimode. Their variations are exhibited. Our results indicate clearly that as the mode increases, field correlation gets better.