November 07, 2019

Turbulence-Resistant FSO Communication Using a Few-Mode Pre-Amplified Receiver

  • Antonio-Lopez J.
  • Chen H.
  • Correa R.
  • Fontaine N.
  • Huang B.
  • Li G.
  • Liu H.
  • Ryf R.
  • Wen H.
  • Zacarias J.

Leveraging recent advances in space-division multiplexing, we propose and demonstrate turbulence-resistant free-space optical communication using few-mode (FM) pre-amplified receivers. The rationale for this approach is that a distorted wavefront can be decomposed into a superposition of the fundamental Gaussian mode and high-order modes of a few-mode fiber. We present the noise statistics and the sensitivity of the FM pre-amplified receiver, followed by experimental and numerical comparisons between FM pre-amplified receivers and single-mode (SM) pre-amplified receivers with or without adaptive optics. FM pre-amplified receivers for FSO can achieve high sensitivity, simplicity and reliability.

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