Dr. Félix A. Miranda Profile

Dr. Félix A. Miranda

at NASA Glenn Research Ctr

SPIE Involvement:

Author

Proceedings Article | 5 March 2021 Presentation + Paper

An overview of key optical communications technologies under development at the NASA Glenn Research Center

Félix Miranda, Sarah Tedder, Brian Vyhnalek, Jennifer Downey, Adam Wroblewski, Casey Bakula, Evan Katz, John Lekki, Rachel Dudukovich, Alan Hylton, Daniel Raible, Robert Romanofsky

Proceedings Volume 11692, 116920X (2021) https://doi.org/10.1117/12.2579420

KEYWORDS: Aerospace engineering, New and emerging technologies, Space operations, Data communications, Telecommunications, Quantum key distribution, Mobile communications, Video, Space robots, Robotics

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Proceedings Article | 2 August 2019 Presentation

Transmission telescope optical metrology (Conference Presentation)

Viviana Vladutescu, Aaron Swank, Dzu Le, Calvin Robinson, Félix Miranda, Victor Pena, Katherine Chun

Proceedings Volume 11057, 1105718 (2019) https://doi.org/10.1117/12.2534296

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Current and future space-exploration endeavors will require new capabilities for large data transfer between Earth and other planets in the Solar system. Data communication with Earth from other planets will be completed through DSN (Deep Space Network) arrays on Earth and satellites around Earth. In an effort to develop advanced Space communication capabilities for large data transfer, NASA John H. Glenn Research Center at Lewis Field (GRC) is also investing a revolutionary concept, named iROC (integrated Radio and Optical Communication), featuring a space-communication terminal which tightly integrates a compact optical transmitter with a radio communication system. A particular design named TeleTenna (Telescope within (RF) Antenna) for future iROC flight-demonstration is being developed at GRC, in which a laser-transmission telescope is placed at the center of an RF antenna. The TeleTenna system capabilities to be demonstrated should include advanced pointing techniques for laser-transmission without a beacon over vast Space distances up to at least 2.0 AU (Astronomical Unit). The pointing-precision imposed on this TeleTenna design for beaconless optical communication should be achievable with an interferometric Star Tracker (iST) for celestial pointing calculation and the metrology for tracking the outgoing laser-beam. The outer-diameter of the Primary-Mirror (PM) of the telescope (either of Cassegrain or Ritchey-Chrétien type) in the TeleTenna concept for data transmission from Mars to Earth is 0.25 meters, and the Secondary-Mirror (SM) outer-diameter is 0.025 meters. The laser-transmission tertiary optics behind the PM include the laser-fiber port, collimator lens, focus lens, quarter-wave plate, and a beam-splitter in that order; all aligned with the telescope axis. The test-bed that the first author and GRC team setup back in 2017 for some preliminary studies on beaconless-pointing and optics alignment metrology for the TeleTenna concept, and some experimental results will be presented in this paper. The investigated metrology includes an optics alignment sensing metrology to image a beam reflected from a fiducial on the secondary mirror of the surrogate telescope onto a pixelated sensor (PixSen) behind the telescope. Additionally, the metrology includes sampling a portion of the laser beam and redirecting it onto the iST image plane. The objectives of this procedure are to determine angular change of a laser beam as it comes out of the surrogate telescope. Among other findings, the work presented here shows that the alignment measurements performed at the edge of the Fine Steering Mirror (FSM) articulation range lead to nonlinearity in the relationship between the out-going beam direction registered on the iST and the fiducial reflected beam direction on an alignment sensor placed behind the telescope. For this reason, the adjustment of FSM angular position can realign only one of the beams with its respective camera but not both, and therefore an additional metrology instrument is required for high pointing precision. In the presented proof-of-concept metrology, this additional metrology component could be the piezo-controller of the FSM and/or an autocollimator that gives with accuracy the position of the FSM. These findings are relevant to the current development and design of the iROC system at GRC.

Proceedings Article | 14 May 2018 Presentation + Paper

Microwave bolometers based on carbon nanotube thin films and CVD-grown graphene

Ryan Toonen, Michael Gasper, Nitin Parsa, Venkata Sai Praneeth Karempudi, Blake Amacher, Colleen Treacy, Ramesh Sivarajan, Nicholas Varaljay, Robert Romanofsky, Félix Miranda

Proceedings Volume 10656, 106560G (2018) https://doi.org/10.1117/12.2305107

KEYWORDS: Graphene, Thin films, Microwave radiation, Bolometers, Sapphire, Silicon, Photoresist materials, Signal detection, Resistance, Gold

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SPIE Journal Paper | 1 April 2007

Modeling and performance limits of a large aperture high-resolution wavefront control system based on a liquid crystal spatial light modulator

Xinghua Wang, Bin Wang, Philip Bos, Paul McManamon, John Pouch, Félix Miranda, James Anderson

OE, Vol. 46, Issue 04, 044001, (April 2007) https://doi.org/10.1117/12.10.1117/1.2730485

KEYWORDS: Wavefronts, Diffraction, Electrodes, Mirrors, Monochromatic aberrations, Performance modeling, Spatial light modulators, Liquid crystals, Telescopes, Wavefront aberrations

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SPIE Journal Paper | 1 April 2006

Smectic-A-filled birefringent elements and fast switching twisted dual-frequency nematic cells used for digital light deflection

Oleg Pishnyak, Andrii Golovin, Liubov Kreminska, John Pouch, Félix Miranda, Bruce Winker, Oleg Lavrentovich

OE, Vol. 45, Issue 04, 044002, (April 2006) https://doi.org/10.1117/12.10.1117/1.2192520

KEYWORDS: Shape memory alloys, Prisms, Liquid crystals, Polarization, Molecules, Magnetism, Optical components, Optical engineering, Temperature metrology, Birefringence

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Proceedings Article | 30 August 2005 Paper

Modeling of optical aberration correction using a liquid crystal device

Xinghua Wang, Bin Wang, Paul McManamon, John Pouch, Felix Miranda, Philip Bos

Proceedings Volume 5894, 589411 (2005) https://doi.org/10.1117/12.626284

KEYWORDS: Liquid crystals, Wavefronts, Mirrors, LCDs, Optical calibration, Telescopes, Spatial light modulators, Picosecond phenomena, Instrument modeling, Optical aberrations

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Proceedings Article | 11 January 2005 Paper

Linking satellites via Earth hot spots and the Internet to form ad hoc constellations

Daniel Mandl, Stu Frye, Sandra Grosvenor, Mary Ann Ingram, John Langley, Felix Miranda, Richard Lee, Robert Romanofsky, Afroz Zaman, Zoya Popovic, Robert Sherwood, Steve Chien, Ashley Davies

Proceedings Volume 5659, (2005) https://doi.org/10.1117/12.579307

KEYWORDS: Satellites, Antennas, Sensors, Internet, Clouds, Image processing, MODIS, Forestry, Space operations, Satellite imaging

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SPIE Journal Paper | 1 November 2004

Performance evaluation of a liquid-crystal-on-silicon spatial light modulator

Xinghua Wang, Bin Wang, John Pouch, Felix Miranda, James Anderson, Philip Bos

OE, Vol. 43, Issue 11, (November 2004) https://doi.org/10.1117/12.10.1117/1.1794706

KEYWORDS: Wavefronts, Liquid crystal on silicon, Liquid crystals, Diffraction, Phased array optics, Photovoltaics, Wavefront compensation, Birefringence, Refractive index, Control systems

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Proceedings Article | 12 October 2004 Paper

Spatial resolution limitation of liquid crystal spatial light modulator

Xinghua Wang, Bin Wang, Paul McManamon, John Pouch, Felix Miranda, James Anderson, Philip Bos

Proceedings Volume 5553, (2004) https://doi.org/10.1117/12.559283

KEYWORDS: Liquid crystals, Electrodes, Diffraction, Spatial resolution, Phase modulation, Diffraction gratings, Phased array optics, Spatial light modulators, Finite-difference time-domain method, Birefringence

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Proceedings Article | 15 September 2004 Paper

Laser beam steering/shaping with LCoS 2D OPA for free space optical communication

Xinghua Wang, Bin Wang, Paul McManamon, John Pouch, Felix Miranda, James Anderson, Philip Bos

Proceedings Volume 5403, (2004) https://doi.org/10.1117/12.543809

KEYWORDS: Liquid crystal on silicon, Diffraction, Liquid crystals, Mirrors, Spatial light modulators, Wavefronts, Wavefront aberrations, Beam steering, Free space optical communications, Wavefront compensation

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Proceedings Article | 11 December 2003 Paper

Liquid crystal on silicon (LCOS) wavefront corrector and beam steerer

Xinghua Wang, Bin Wang, John Pouch, Felix Miranda, Michael Fisch, James Anderson, Vassili Sergan, Philip Bos

Proceedings Volume 5162, (2003) https://doi.org/10.1117/12.511504

KEYWORDS: Liquid crystal on silicon, Wavefronts, Diffraction, Beam steering, Liquid crystals, Wavefront compensation, Finite-difference time-domain method, Diffraction gratings, Optical simulations, Control systems

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Proceedings Article | 10 December 2002 Paper

RF signal switching and distribution techniques in civil aviation aircraft

Okechukwu Ugweje, Hung Nguyen, Duc Ngo, Robert Kerczewski, Felix Miranda

Proceedings Volume 4861, (2002) https://doi.org/10.1117/12.456363

KEYWORDS: Control systems, Telecommunications, Switching, Antennas, Local area networks, Optical fibers, Control systems design, RF communications, Actuators

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Proceedings Article | 6 November 2002 Paper

Diffraction efficiency of thin film holographic beam steering devices

Charles Titus, John Pouch, Hung Nguyen, Felix Miranda, Philip Bos

Proceedings Volume 4825, (2002) https://doi.org/10.1117/12.453891

KEYWORDS: Electrodes, Beam steering, Liquid crystals, Diffraction gratings, Diffraction, Spatial resolution, Finite-difference time-domain method, Silicon, Holography, Mirrors

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Showing 5 of 13 publications

Conference Committee Involvement (2)

Aerospace Applications

13 June 2006 | Dayton, Ohio, United States

Aerospace Applications

7 July 2004 | Cleveland, Ohio, United States

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