Dr. Gerardo G. Ortiz Profile

Dr. Gerardo G. Ortiz

Sr. Member of Technical Staff at Jet Propulsion Lab

SPIE Involvement:

Author

Publications (31)

Proceedings Article | 13 March 2024 Presentation + Paper

Presentation + Paper

Enhancing the optical communication telescope laboratory (OCTL) to support quantum communications between Earth and space

Alexander Lohrmann, Ioana Craiciu, Kittrin Matthews, Gerardo Ortiz, Lewis Roberts, W. Thomas Roberts, Ryan Rogalin, Dmitrios Antsos, Matthew Shaw, Makan Mohageg

Proceedings Volume 12911, 1291104 (2024) https://doi.org/10.1117/12.2691440

KEYWORDS: Polarization, Satellites, Dielectric polarization, Telescopes, Design, Quantum detection, Quantum key distribution, Quantum systems, Polarization control, Quantum receivers

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Proceedings Article | 12 March 2024 Presentation + Paper

Presentation + Paper

Deep space optical communications (DSOC) technology demonstration pre-launch validation and performance tests with the laser test evaluation station (LTES)

Angel Velasco, Jason Allmaras, Joseph Kovalik, Vachik Garkanian, Brett Douglas, Erik Alerstam, Malcolm Wright, Sarah Haque, Vincent Van Rhein, Daniel Macdonald, David Zhu, Oscar Alvarez-Salazar, Dylan Conway, Gerardo Ortiz, Sabino Piazzolla, Yanhua Anderson, Kenneth Andrews, Meera Srinivasan, Abhijit Biswas

Proceedings Volume 12877, 1287707 (2024) https://doi.org/10.1117/12.3008378

KEYWORDS: Cameras, Space operations, Scintillation, Receivers, Laser communications, Laser communication terminals, Calibration, Short wave infrared radiation, Engineering, Control systems

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Proceedings Article | 12 March 2024 Presentation + Paper

Presentation + Paper

Deep space optical communications technology demonstration

Abhijit Biswas, Meera Srinivasan, Kenneth Andrews, Erik Alerstam, Angel Velasco, Malcolm Wright, Joseph Kovalik, Brett Douglas, Jason Allmaras, Vincent Van Rhein, Emma Wollman, Ryan Rogalin, Sean Meenehan, David Zhu, Dylan Conway, Oscar Alvarez-Salazar, Christopher Pong, Herrick Chang, Marcus Wilkerson, Edwin Grigorian, Nathaniel Richard, Daniel Cho, Yuri Beregovski, William Buehlman, Luke Stewart, Mark Brewer, Christine Chen, Vachik Garkanian, Gerardo Ortiz, Daniel Macdonald, Sarah Haque, Matthew Shaw, Christopher Leffler, Greg Agnes, Joel Johnson, Arthur Na-Nakornpanom, Rogeliio Rosas, Jason Mumolo, Oliver Lay, Roger O'Brient, Marcum Martz, Gregory Miles, Kitt Matthews, Hernan Erlig, Dorothy Lewis, Anthony Mittskus, Serge Dubovitsky, William Klipstein

Proceedings Volume 12877, 1287706 (2024) https://doi.org/10.1117/12.3001750

KEYWORDS: Space operations, Telescopes, Signal processing, Receivers, Transmitters, Laser safety, Interfaces, Sensors, Deep space optical communications, Actuators

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Proceedings Article | 15 March 2023 Presentation + Paper

Presentation + Paper

The Deep Space Optical Communications project ground laser transmitter

Meera Srinivasan, Angel Velasco, Malcolm Wright, Seán Meenehan, Michael Peng, Ryan Rogalin, Nate Richard, Abhijit Biswas, Alexa Aguilar, Yuri Beregovski, Mark Brewer, William Buehlman, Jason Allmaras, Gerardo Ortiz, Vachik Garkanian

Proceedings Volume 12413, 124130Q (2023) https://doi.org/10.1117/12.2649561

KEYWORDS: Telescopes, Mirrors, Laser safety, High power lasers, Optical transmission, Transmitters, Space operations

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Proceedings Article | 15 March 2023 Presentation + Paper

Presentation + Paper

Ground station for terabyte infrared delivery (TBIRD)

Sabino Piazzolla, William Roberts, Joseph Kovalik, Michael Peng, Vachik Garkanian, Christine Chen, William Buehlman, Mark Brewer, Gerardo Ortiz, Kittrin Matthews, Angel Velasco, Abhijit Biswas

Proceedings Volume 12413, 1241311 (2023) https://doi.org/10.1117/12.2655123

KEYWORDS: Telescopes, Adaptive optics, Cameras, Satellites, Wavefront sensors, Clouds, Beam splitters, Optical turbulence

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Proceedings Article | 6 March 2014 Paper

Paper

Pointing, acquisition, and tracking architecture tools for deep-space optical communications

Swati Mohan, Oscar Alvarez-Salazar, Kevin Birnbaum, Abhijit Biswas, William Farr, Hamid Hemmati, Shawn Johnson, Geraldo Ortiz, Kevin Quirk, Zahidul Rahman, Martin Regher, Farheen Rizvi, Joel Shields, Meera Srinivasan

Proceedings Volume 8971, 89710H (2014) https://doi.org/10.1117/12.2042704

KEYWORDS: Optical communications, Sensors, Space operations, Systems engineering, Asteroids, Error analysis, Receivers, Transmitters, Ka band, Signal attenuation

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Proceedings Article | 24 February 2009 Paper

Paper

A sub-hertz vibration isolation platform for a deep space optical communication transceiver

Virginio Sannibale, Gerardo Ortiz, William Farr

Proceedings Volume 7199, 71990I (2009) https://doi.org/10.1117/12.810949

KEYWORDS: Vibration isolation, Space telescopes, Optical communications, Oscillators, Astronomical imaging, Space operations, Transceivers, Telescopes, Control systems, Sensors

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Proceedings Article | 24 February 2009 Paper

Paper

Canonical deep space optical communications transceiver

Gerardo Ortiz, William Farr, Jeffrey Charles, W. Thomas Roberts, Virginio Sannibale, Jonathan Gin, Adit Saharaspude, Vachik Garkanian

Proceedings Volume 7199, 71990K (2009) https://doi.org/10.1117/12.812410

KEYWORDS: Transceivers, Space operations, Electronics, Control systems, Astronomical imaging, Optical communications, Sensors, Vibration isolation, Computer aided design, Space telescopes

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Proceedings Article | 1 March 2006 Paper

Paper

Star tracker based ATP system conceptual design and pointing accuracy estimation

Gerardo Ortiz, Shinhak Lee

Proceedings Volume 6105, 61050D (2006) https://doi.org/10.1117/12.660263

KEYWORDS: Stars, Optical tracking, Gyroscopes, Telescopes, Telecommunications, Optical communications, Space telescopes, Sensors, Error analysis, Space operations

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Proceedings Article | 1 March 2006 Paper

Paper

Daytime use of astronomical telescopes for deep-space optical links

W. Thomas Roberts, Gerardo Ortiz, Timothy Boyd

Proceedings Volume 6105, 61050G (2006) https://doi.org/10.1117/12.660256

KEYWORDS: Telescopes, Space telescopes, Mirrors, Astronomical telescopes, Stars, Astronomy, Sun, Adaptive optics, Temperature metrology, Domes

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Proceedings Article | 1 March 2006 Paper

Paper

Simplified lasercom system architecture using a disturbance-free platform

Chien-Chung Chen, Hamid Hemmati, Abhijit Biswas, Gerardo Ortiz, William Farr, Nelson Pedreiro

Proceedings Volume 6105, 610505 (2006) https://doi.org/10.1117/12.660264

KEYWORDS: Laser systems engineering, Space operations, Control systems, Telecommunications, Laser optics, Laser stabilization, Laser applications, Transceivers, Sensors, Stars

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Proceedings Article | 1 March 2006 Paper

Paper

Centroiding accuracy of infrared Earth images mitigating impact of blurring and Earth non-uniformity

Y. Chen, G. Ortiz, H. Hemmati, S. Lee

Proceedings Volume 6105, 61050E (2006) https://doi.org/10.1117/12.660269

KEYWORDS: Infrared imaging, Infrared telescopes, Thermography, Edge detection, Detection and tracking algorithms, Deconvolution, Infrared cameras, Telescopes, Space telescopes, Infrared radiation

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Proceedings Article | 18 April 2005 Paper

Paper

Approach for acquiring and tracking downlink from Mars using the Hale telescope

Abhijit Biswas, Sabino Piazzolla, K. Quirk, Gerardo Ortiz, Shinhak Lee, Meera Srinivasan, Chien Chung Chen

Proceedings Volume 5712, (2005) https://doi.org/10.1117/12.600833

KEYWORDS: Mars, Telescopes, Sensors, Space telescopes, Staring arrays, Signal detection, Signal processing, Line of sight stabilization, Optical filters, Space operations

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Proceedings Article | 18 April 2005 Paper

Paper

Pointing knowledge accuracy of the star tracker based ATP system

Shinhak Lee, Gerardo Ortiz, James Alexander

Proceedings Volume 5712, (2005) https://doi.org/10.1117/12.612037

KEYWORDS: Stars, Gyroscopes, Sensors, Optical communications, Acquisition tracking and pointing, Optical tracking, Astronomical imaging, Space operations, Error analysis, Data communications

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Proceedings Article | 18 April 2005 Paper

Paper

Airborne optical communications demonstrator design and pre-flight test results

Abhijit Biswas, Norman Page, Jerry Neal, David Zhu, Malcolm Wright, Gerardo Ortiz, William Farr, Hamid Hemmati

Proceedings Volume 5712, (2005) https://doi.org/10.1117/12.600834

KEYWORDS: Mirrors, Head, Sensors, Optical fabrication, Cameras, Optical communications, Collimators, Telescopes, Beam splitters, Imaging systems

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Proceedings Article | 4 August 2003 Paper

Paper

Quantum simulations of physics problems

Rolando Somma, Gerardo Ortiz, Emanuel Knill, James Gubernatis

Proceedings Volume 5105, (2003) https://doi.org/10.1117/12.487249

KEYWORDS: Quantum communications, Quantum computing, Computer simulations, Computing systems, Quantum efficiency, Quantum networks, Quantum physics, Correlation function, Fermions, Physics

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Proceedings Article | 3 July 2003 Paper

Paper

Design of an event-driven random-access-windowing CCD-based camera

Steve Monacos, Raymond Lam, Angel Portillo, Gerardo Ortiz

Proceedings Volume 4975, (2003) https://doi.org/10.1117/12.478941

KEYWORDS: Cameras, Field programmable gate arrays, Signal processing, Imaging systems, Charge-coupled devices, CCD cameras, Logic, Image processing, Control systems, Process control

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Proceedings Article | 3 July 2003 Paper

Paper

Atmosphere-tolerant acquisition, tracking, and pointing subsystem

Shinhak Lee, Gerardo Ortiz

Proceedings Volume 4975, (2003) https://doi.org/10.1117/12.478940

KEYWORDS: Sensors, Optical communications, Error analysis, Atmospheric optics, Staring arrays, Data communications, Acquisition tracking and pointing, Telecommunications, Optical tracking, Atmospheric sensing

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Proceedings Article | 3 July 2003 Paper

Paper

Design and development of a robust ATP subsystem for the Altair UAV-to-ground lasercomm 2.5-Gbps demonstration

Gerardo Ortiz, Shinhak Lee, Steve Monacos, Malcolm Wright, Abhijit Biswas

Proceedings Volume 4975, (2003) https://doi.org/10.1117/12.478939

KEYWORDS: Unmanned aerial vehicles, Acquisition tracking and pointing, Cameras, Sensors, Optical communications, Telescopes, Staring arrays, Optical coherence tomography, Error analysis, Receivers

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Proceedings Article | 26 April 2002 Paper

Paper

Multigigabit data-rate optical communication depicting LEO-to-GEO and GEO-to-ground links

Hamid Hemmati, Malcolm Wright, Babak Sanii, Norman Page, Gerry Ortiz, Abhijit Biswas, Keith Wilson

Proceedings Volume 4635, (2002) https://doi.org/10.1117/12.464091

KEYWORDS: Receivers, Transmitters, Optical communications, Telescopes, Acquisition tracking and pointing, Space telescopes, Space operations, Signal attenuation, Fiber amplifiers, Wavelength division multiplexing

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Proceedings Article | 20 June 2001 Paper

Paper

Submicroradian pointing system design for deep-space optical communications

Shinhak Lee, James Alexander, Gerry Ortiz

Proceedings Volume 4272, (2001) https://doi.org/10.1117/12.430794

KEYWORDS: Optical communications, Staring arrays, Sensors, Error analysis, Telecommunications, Optical design, Space operations, Mirrors, Algorithm development, Astronomical imaging

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Proceedings Article | 20 June 2001 Paper

Paper

Vibration platform testbed for deep-space aquisition, tracking, and pointing

Juan Ceniceros, Christian Jeppesen, Gerry Ortiz

Proceedings Volume 4272, (2001) https://doi.org/10.1117/12.430796

KEYWORDS: Ferroelectric materials, Actuators, Acquisition tracking and pointing, Optical fabrication, Telecommunications, Optical communications, Motion models, Space operations, Optical tracking, Systems modeling

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Proceedings Article | 20 June 2001 Paper

Paper

Functional demonstration of accelerometer-assisted beacon tracking

Gerry Ortiz, Angel Portillo, Shinhak Lee, Juan Ceniceros

Proceedings Volume 4272, (2001) https://doi.org/10.1117/12.430795

KEYWORDS: Sensors, Optical tracking, Space operations, Algorithm development, Vibration simulation, Detection and tracking algorithms, Acquisition tracking and pointing, Error analysis, Staring arrays, Stars

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Proceedings Article | 2 May 2000 Paper

Paper

Design of the optoelectronic receiver for deep-space optical communications

Gerry Ortiz, John Sandusky, Abhijit Biswas

Proceedings Volume 3932, (2000) https://doi.org/10.1117/12.384304

KEYWORDS: Sensors, Receivers, Telescopes, Avalanche photodetectors, Signal detection, Optoelectronics, Quantum efficiency, Mars, Space telescopes, Photons

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Proceedings Article | 26 April 1999 Paper

Paper

Overview of the preliminary design of the Optical Communication Demonstration and High-Rate Link Facility

John Sandusky, Muthu Jeganathan, Gerry Ortiz, Abhijit Biswas, Sukhan Lee, George Parker, Brad Liu, Donald Johnson, Jon De Pew, James Lesh

Proceedings Volume 3615, (1999) https://doi.org/10.1117/12.346178

KEYWORDS: Optical communications, Telecommunications, Telescopes, Space telescopes, Scintillation, Receivers, Atmospheric optics, Optical design, Space operations, Signal attenuation

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Proceedings Article | 26 April 1999 Paper

Paper

Design of a 2.5-Gbps optical transmitter for the International Space Station

Gerry Ortiz, Muthu Jeganathan, John Sandusky, Hamid Hemmati

Proceedings Volume 3615, (1999) https://doi.org/10.1117/12.346177

KEYWORDS: Transmitters, Silicon, Oscillators, Staring arrays, Electronics, Optical amplifiers, Modulation, Optical communications, Data conversion, Space telescopes

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Proceedings Article | 22 December 1997 Paper

Paper

Monolithic wavelength-graded VCSEL and wavelength-selective photodetector arrays for WDM applications

Julian Cheng, Sanh Luong, Gerry Ortiz, Yuxin Zhou, Jun Lu, Hong Hou, B. Hammons, G. Allen Vawter

Proceedings Volume 3290, (1997) https://doi.org/10.1117/12.298233

KEYWORDS: Vertical cavity surface emitting lasers, Photodetectors, Mirrors, Absorption, Wavelength division multiplexing, Metalorganic chemical vapor deposition, Free space optics, Semiconducting wafers, Reflectivity

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Proceedings Article | 4 April 1997 Paper

Paper

High-speed optical transceiver and routing switch using VCSEL-based integrated optoelectronics

Julian Cheng, Yin-Chen Lu, Bo Lu, Gerry Ortiz, Andrew Alduino, Christopher Hains, Hong Hou, Michael Hafich, G. Allen Vawter, John Zolper

Proceedings Volume 3005, (1997) https://doi.org/10.1117/12.271097

KEYWORDS: Vertical cavity surface emitting lasers, Switches, Photodetectors, Switching, Optoelectronics, Optical fibers, Integrated optics, Receivers, Modulation, Transceivers

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Proceedings Article | 5 April 1995 Paper

Paper

High-speed optical interconnect technology for a reconfigurable multiprocessor network

Julian Cheng, Yin-Chen Lu, Bo Lu, Andrew Alduino, Gerry Ortiz, John Zolper, John Klem, G. Allen Vawter

Proceedings Volume 2400, (1995) https://doi.org/10.1117/12.206327

KEYWORDS: Switches, Vertical cavity surface emitting lasers, Modulation, Optoelectronics, Data conversion, Switching, Optical switching, Integrated optics, Binary data, Channel projecting optics

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Proceedings Article | 2 June 1994 Paper

Paper

High-speed modulation characteristics and small-signal circuit modeling of deeply implanted GRINSCH-VCSELs with graded heterointerfaces

Gerry Ortiz, Julian Cheng

Proceedings Volume 2147, (1994) https://doi.org/10.1117/12.177211

KEYWORDS: Modulation, Vertical cavity surface emitting lasers, Capacitance, Resistance, Measurement devices, Instrument modeling, Circuit switching, Thermal effects, Data modeling, Mirrors

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Proceedings Article | 4 January 1994 Paper

Paper

Low-noise hybrid superconductor/semiconductor 7.4-GHz receiver downconverter for NASA space applications

Hamid Javadi, Jeff Barner, Javier Bautista, Kul Bhasin, J. Bowen, Wilbert Chew, Chris Chorey, Marc Foote, B. Fujiwara, A. Guern, Brian Hunt, Regis Leonard, Gerry Ortiz, Daniel Rascoe, Robert Romanofsky, Richard Vasquez, Paul Wamhof

Proceedings Volume 2156, (1994) https://doi.org/10.1117/12.166145

KEYWORDS: Gold, Oscillators, Superconductors, Cryogenics, Resonators, Receivers, Diodes, Electronic filtering, Microwave radiation, Amplifiers

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Showing 5 of 31 publications

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