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Fiber Optics and Atmospheric Monitoring

Fiber Optics and Atmospheric Monitoring. Matthew J. Parker Savannah River Technology Center Westinghouse Savannah River Company Aiken, South Carolina and Carvel E. Holton Virginia Polytechnic and State University Blacksburg, Virginia. Outline. Background Sensors Design applications

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Fiber Optics and Atmospheric Monitoring

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  1. Fiber Optics and Atmospheric Monitoring Matthew J. Parker Savannah River Technology Center Westinghouse Savannah River Company Aiken, South Carolina and Carvel E. Holton Virginia Polytechnic and State University Blacksburg, Virginia

  2. Outline Background Sensors Design applications - Industrial - Atmospheric turbulence System Integration Cost-Effectiveness/Potential Improvements UPDATE

  3. Background Optical technology benefits- - No RFI/lightning Environmental Sensors- - Met and air pollution Developments in Communications Industry- - Benefits Combine optical sensors- - Complete system(ref. Holton and Parker, 1999 SPIE)

  4. Sensors • Conventional cup and vane • Fiber lidar • Temperature/T • Relative humidity • Barometric pressure • Visibility • Total precipitation • Chemical/particulate/hazards/electro- magnetic/ corrosion/spectra/etc.

  5. Design Applications Industrial Application -- Routine monitoring -- Meteorological -- Air quality Atmospheric Turbulence -- Research/Experiments

  6. Industrial Monitoring System

  7. Atmospheric Turbulence Variable Sensor / Response Time Wind speed Fiber lidar / 0.001s (OSA, 1995) Wind direction Fiber lidar / 0.001s (OSA, 1995) Temperature Bragg-grating / 0.01s (Bhatia, et. al, 1996 and Kersey, 1995) Relative Coated fiber / 0.1s (Arregui, et al, 1999) humidity Barometric diaphragm / 0.01s (Xiao, et. al, 1995) pressure

  8. System Integration Multiplexed optical signals over single (or limited) fibers Connectors used for quick sensor change-out

  9. Cost-Effectiveness and Potential Improvements Fiber optic components developed for telecommunications industry Fiber sensors less prone to wear (non-mechanical) Costs driven lower with inexpensive sensors

  10. CONCLUSION An optical atmospheric monitoring system can become a reality with today’s technology! . . .

  11. UPDATE!!! SBIR Phase II between VaTech and Yankee Environmental Systems PRODUCTS: Fiber Lidar & RH Sensor

  12. Fiber Lidar Data--Smoke

  13. Fiber Lidar Data--Clouds

  14. Fiber RH Sensor

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