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- W1982989623 abstract "Dynamically changing turbulence in the atmosphere distorts the wavefront of the laser beam propagatingthrough it. The resulting spatial and temporal fields of the refractive index lead to performance degradationin the form of reduced signal power and increased BER, even for short link ranges. An electricallyaddressed liquid crystal spatial light modulator (SLM) can be used to correct the optical path difference(OPD) pattern resulting from the atmospheric distortions. Approximating the phase profile of the distortedbeam using well-known Zernike formalism reduces the complexity of controlling each pixel of the SLM.Real time correction of the wavefront can be achieved using the Simplex optimization procedure by Nelderand Mead. Previously, some modifications have been proposed to overcome the local minima problems aswell as the faster convergence. Yet the better and faster performance could be achieved by more accurateprediction of the simplex initialization along with the modifications in the simplex procedure. This paperpresents the experimental results of such modifications to the earlier proposed system." @default.
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- W1982989623 date "2007-02-08" @default.
- W1982989623 modified "2023-09-23" @default.
- W1982989623 title "Mitigation of optical turbulence effects using a modified simplex optimization approach: experimental study" @default.
- W1982989623 doi "https://doi.org/10.1117/12.708525" @default.
- W1982989623 hasPublicationYear "2007" @default.
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