Search Results - "Walther, Frederick G"

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  1. 1

    Experimental observations of channel reciprocity in single-mode free-space optical links by Parenti, Ronald R, Roth, Jeffrey M, Shapiro, Jeffrey H, Walther, Frederick G, Greco, Joseph A

    Published in Optics express (10-09-2012)
    “…This article describes observations made during a recent series of single-mode lasercom experiments in which high-rate data transmission was demonstrated…”
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    Journal Article
  2. 2

    Differential Phase-Shift Keying in Spatial Diversity Transmitters for Fade Mitigation by Ulmer, T G, Henion, S R, Walther, F G, Schulz, P A

    “…We investigate the use of differential phase-shift keying (DPSK) in multiwavelength spatial diversity transmitters for mitigation of atmospheric fading. By…”
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    Journal Article
  3. 3

    Air-to-ground lasercom system demonstration by Walther, Frederick G, Nowak, George A, Michael, S, Parenti, Ronald, Roth, Jeffrey, Taylor, John, Wilcox, William, Murphy, Robert, Greco, Joseph, Peters, John, Williams, Timothy, Henion, Scott, Magliocco, Richard, Miller, Tom, Volpicelli, Alicia

    “…This article presents an overview of the air to ground lasercom demonstration performed under the Free-Space Optical Communications Airborne Link (FOCAL)…”
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    Conference Proceeding
  4. 4

    Power Penalty From Amplified Spontaneous Emission in Spatial Diversity Links for Fade Mitigation by Ulmer, T.G., Henion, S.R., Walther, F.G.

    Published in IEEE photonics technology letters (01-02-2009)
    “…We investigate the power penalty caused by excess amplified spontaneous emission in an optically preamplified receiver for a communications link where a…”
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    Journal Article
  5. 5

    Channel reciprocity in single-mode free-space optical links by Parenti, R. R., Roth, J. M., Greco, J. A., Walther, F. G., Shapiro, J. H.

    “…This article describes observations of near-unity signal correlations obtained during a recent series of single-mode lasercom experiments in which links were…”
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    Conference Proceeding
  6. 6
  7. 7

    Measurements of Natural Radiation Effects in a Low Noise Avalanche Photodiode by Swanson, Eric A., Arnau, Elaine R., Walther, Frederick G.

    Published in IEEE transactions on nuclear science (01-12-1987)
    “…Low noise avalanche photodiodes were irradiated to determine their sensitivity to the natural space environment. Radiation effects on important APD parameters…”
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    Journal Article
  8. 8
  9. 9

    Multiple UHF frequency generation using acoustic surface-wave filters by Walther, F.G., Budreau, A.J., Carr, P.H.

    Published in Proceedings of the IEEE (01-01-1973)
    “…A new technique of using acoustic surface-wave filters for multiple UHF frequency generation has been demonstated. The 21 contiguous surface-wave filters,…”
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    Journal Article