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Online processing concept

cynthia-pittman
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Online processing concept

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  1. Development of efficient FPGA-based phase meters for IR-Interferometers. Optimizations for multichannel interferometersL. Estebana), M.Sáncheza), J.Sáncheza)a) Laboratorio Nacional de Fusión, Asociación EURATOM-CIEMAT, Avd Complutense Nº22, Madrid, Spain.J. A. Lópezc), O. Nieto-Taladriz c)c) Departamento de Ingeniería Electrónica, ETSI Telecomunicación, Universidad Politécnica de Madrid, Avd Complutense Nº20, Madrid, Spain.P. Pedreirac), P. Acedoc)c) Departamento de Opto-Electrónica y Tecnología Laser, Universidad Carlos III de Madrid, Avd de La Universidad SN, Leganés, Spain.

  2. Online processing concept • Pre-processing • De-noising of input carrier signals (interference signals) (TJ-II, W7-X) • Digital Diplexing (W7-X) • Crosstalk elimination... • Processing • Phase demodulation of the input signals with a proper algorithm • Post-processing • Control signals • Operations over the demodulated signals

  3. Compensation results TJ-II, W7-X

  4. Electron density computation, example TJ-II λ1ΔΦ1, λ2ΔΦ2 Optical pathlength differences Average electronic density ≈2 μm Maximun phase shift ≈ 10 fringes (periods) CO2 Maximun phase shift ≈ 100 fringes (periods) NdYAG

  5. PFE10 THANKS!

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