Dr. Frederick G. Walther Profile

Dr. Frederick G. Walther

Member/Technical Staff

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Publications (9)

Proceedings Article | 2 March 2017 Presentation + Paper

Temperature-stabilized, narrowband tunable fiber-Bragg gratings for matched-filter receiver

Jeffrey Roth, Joseph Kummer, Jeffrey Minch, Bryan Malinsky, Vincent Scalesse, Frederick Walther

Proceedings Volume 10096, 100960D (2017) https://doi.org/10.1117/12.2260667

KEYWORDS: Fiber Bragg gratings, Temperature metrology, Optical filters, Resistors, Receivers, Calibration, Modulation, Control systems, Dielectric filters, Glasses

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Proceedings Article | 16 March 2015 Paper

Variable acquisition/communication split ratio for lasercom terminals

Todd Ulmer, Frederick Walther

Proceedings Volume 9354, 93540P (2015) https://doi.org/10.1117/12.2084857

KEYWORDS: Receivers, Sensors, Beam splitters, Transmitters, Ions, Mirrors, Polarization, Optical tracking, Data acquisition, Signal attenuation

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Proceedings Article | 16 March 2015 Paper

Single-polarization optical low-noise pre-amplified receiver for heavily coded optical communications links

Jeffrey Roth, Amrita Masurkar, Vincent Scalesse, Jeffrey Minch, Frederick Walther, Shelby Savage, Todd Ulmer

Proceedings Volume 9354, 935409 (2015) https://doi.org/10.1117/12.2084844

KEYWORDS: Receivers, Clocks, Polarizers, Fiber Bragg gratings, Singular optics, Optical communications, Phase modulation, Polarization, Wavelength division multiplexing, Optical amplifiers

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Proceedings Article | 16 March 2015 Paper

Frequency stabilization of laser diodes in an aggressive thermal environment

J. Minch, F. Walther, Shelby Savage, A. Plante, Vincent Scalesse

Proceedings Volume 9354, 93540T (2015) https://doi.org/10.1117/12.2084547

KEYWORDS: Absorption, Free space optical communications, Transmitters, Receivers, Telecommunications, Semiconductor lasers, Laser stabilization, Optical amplifiers, Optical filters, Interferometers

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Proceedings Article | 24 August 2010 Paper

Air-to-ground lasercom system demonstration design overview and results summary

Frederick Walther, Steven Michael, Ronald Parenti, John Taylor

Proceedings Volume 7814, 78140Y (2010) https://doi.org/10.1117/12.864262

KEYWORDS: Receivers, Scintillation, Turbulence, Distortion, Cameras, Forward error correction, Laser systems engineering, Laser development, Telecommunications, Free space optics

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Proceedings Article | 21 August 2009 Paper

A process for free-space laser communications system design

Frederick Walther, John Moores, Robert Murphy, Steven Michael, George Nowak

Proceedings Volume 7464, 74640V (2009) https://doi.org/10.1117/12.826256

KEYWORDS: Receivers, Atmospheric optics, Turbulence, Telecommunications, Scintillation, Atmospheric modeling, Free space optical communications, Adaptive optics, Laser systems engineering, Channel projecting optics

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Proceedings Article | 21 August 2009 Paper

Architecture overview and data summary of a 5.4 km free-space laser communication experiment

John Moores, Frederick Walther, Joseph Greco, Steven Michael, William Wilcox, Alicia Volpicelli, Richard Magliocco, Scott Henion

Proceedings Volume 7464, 746404 (2009) https://doi.org/10.1117/12.825591

KEYWORDS: Receivers, Turbulence, Data communications, Free space optical communications, Interfaces, Acquisition tracking and pointing, Forward error correction, Transmitters, Telecommunications, Scintillation

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Proceedings Article | 21 August 2009 Paper

A free-space optical terminal for fading channels

T. Williams, R. Murphy, F. Walther, A. Volpicelli, B. Wilcox, D. Crucioli

Proceedings Volume 7464, 74640W (2009) https://doi.org/10.1117/12.826285

KEYWORDS: Mirrors, Receivers, Optical tracking, Collimators, Beam splitters, Adaptive optics, Channel projecting optics, Free space optics, Commercial off the shelf technology, Staring arrays

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Proceedings Article | 2 May 2009 Paper

Comparison of scintillation measurements from a 5 km communication link to standard statistical models

Steven Michael, Ronald Parenti, Frederick Walther, Alicia Volpicelli, John Moores, William Wilcox, Robert Murphy

Proceedings Volume 7324, 73240J (2009) https://doi.org/10.1117/12.819006

KEYWORDS: Receivers, Scintillation, Forward error correction, Data modeling, Atmospheric scintillation, Statistical analysis, Transmitters, Turbulence, Atmospheric modeling, Spherical lenses

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Showing 5 of 9 publications

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