Prof. Eric Donkor Profile

Prof. Eric Donkor

Professor at Univ of Connecticut

SPIE Involvement:

Conference Chair | Editor | Author

Publications (63)

Proceedings Article | 30 May 2022 Paper

Quantum computing with induced dipole-dipole forbidden transitions

Eric Donkor

Proceedings Volume 12093, 1209303 (2022) https://doi.org/10.1117/12.2623827

KEYWORDS: Quantum communications, Logic, Quantum computing, Ions, Magnetism, Ytterbium, Superposition, Electrons, Erbium, Computer architecture

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Proceedings Article | 30 May 2022 Presentation + Paper

A continuous-variable quantum key distribution using correlated photons

Eric Donkor, Patrick Kumavor

Proceedings Volume 12093, 1209308 (2022) https://doi.org/10.1117/12.2623826

KEYWORDS: Polarization, Logic, Quantum key distribution, Network security, Quantum communications, Computer security, Frequency combs, Modulation, Information security, Telecommunications

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Proceedings Article | 13 May 2019 Presentation + Paper

Multi-variable quantum key distribution based on optical bistability

Eric Donkor

Proceedings Volume 10984, 1098408 (2019) https://doi.org/10.1117/12.2522273

KEYWORDS: Polarization, Logic, Information security, Supercontinuum generation, Quantum key distribution, Bistability, Semiconductor optical amplifiers, Optical filters, Four wave mixing, Beam splitters

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Proceedings Article | 14 May 2018 Presentation + Paper

Method for self-reconstruction of holograms for secure communication

Craig Babcock, Eric Donkor

Proceedings Volume 10660, 106600A (2018) https://doi.org/10.1117/12.2304307

KEYWORDS: Holograms, Holography, Modulation, Quantum key distribution, Visibility, Computer security, Signal detection, Mirrors, Quantum communications, Information security

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Proceedings Article | 10 May 2017 Paper

Method for self reconstruction of holograms for secure communication

Craig Babcock, Eric Donkor

Proceedings Volume 10219, 1021917 (2017) https://doi.org/10.1117/12.2262467

KEYWORDS: Transparency, Telecommunications, Imaging systems, 3D image reconstruction, Optical communications, Spatial light modulators, Holograms, Holography, Cryptography, Computer security, Information security, Detection theory, Modulation, Quantum communications

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Proceedings Article | 21 May 2015 Paper

Induced dipole-dipole forbidden transitions in rare-earth elements and their prospects for quantum information processing

Eric Donkor, Ryan Williams, Fahad Althowibi

Proceedings Volume 9500, 95000P (2015) https://doi.org/10.1117/12.2087025

KEYWORDS: Quantum information processing, Chemical elements, Transition metals, Quantum communications, Magnetism, Quantum information, Entangled states, Ions, Quantum computing, Crystals

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Proceedings Article | 21 May 2015 Paper

A continuous-variable quantum key distribution using correlated photons

Eric Donkor, Reinhard Erdmann, Patrick Kumavor

Proceedings Volume 9500, 950004 (2015) https://doi.org/10.1117/12.2179906

KEYWORDS: Photons, Quantum key distribution, Modulation, Modulators, Phase measurement, Signal detection, Sensors, Single photon, Transmitters, Homodyne detection

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Proceedings Article | 21 May 2015 Paper

Performance limits for single-photons, correlated-photons, and entangled photons for quantum key distribution over fiber optics network topologies

Eric Donkor, Fahad Althowibi, Ryan Williams

Proceedings Volume 9500, 950003 (2015) https://doi.org/10.1117/12.2087027

KEYWORDS: Quantum key distribution, Stars, Photons, Fiber optic networks, Network architectures, Single photon, Wavelength division multiplexing, Signal to noise ratio, Network security, Telecommunications

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Proceedings Article | 5 June 2014 Paper

Modeling of high-efficiency ITO/ZnO quantum wire photovoltaic

F. Althowibi, E. Donkor

Proceedings Volume 9115, 91150P (2014) https://doi.org/10.1117/12.2050761

KEYWORDS: Zinc oxide, Solar cells, Refractive index, Solar energy, Nanofibers, Heterojunctions, Aluminum, Solar radiation models, Absorption, Waveguides

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Proceedings Article | 22 May 2014 Paper

Spectral-temporal-polarization encoding of photons for multi-user secure quantum communication

Eric Donkor

Proceedings Volume 9123, 912306 (2014) https://doi.org/10.1117/12.2053972

KEYWORDS: Photons, Quantum key distribution, Modulators, Computer programming, Quantum communications, Modulation, Polarization, Receivers, Phase shift keying, Networks

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Proceedings Article | 31 May 2013 Paper

Experimental demonstration of all-optical flip flop memory based on wave mixing in a semiconductor optical amplifier

Kimberly Kaltenecker, Yevhen Rutovytskyy, Fahad Althowibi, Eric Donkor

Proceedings Volume 8720, 87201A (2013) https://doi.org/10.1117/12.2018071

KEYWORDS: Polarization, Logic, Semiconductor optical amplifiers, Optical amplifiers, Fiber amplifiers, Mirrors, Quantum memory, Spectrum analysis, Switches, Data storage

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Proceedings Article | 8 May 2012 Paper

Experimental auto-compensating multi-user quantum key distribution network using a wavelength-addressed bus line architecture

Eric Donkor

Proceedings Volume 8397, 839704 (2012) https://doi.org/10.1117/12.924107

KEYWORDS: Quantum key distribution, Networks, Photons, Fermium, Frequency modulation, Polarization, Modulators, Network architectures, Single photon, Visibility

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Proceedings Article | 8 May 2012 Paper

A passively modelocked laser with tunable pulse-repetition frequency in a semiconductor optical amplifier

Eric Donkor, Kimberly Kaltenecker

Proceedings Volume 8397, 839707 (2012) https://doi.org/10.1117/12.924104

KEYWORDS: Semiconductor optical amplifiers, Mirrors, Mode locking, Pulsed laser operation, Semiconductor lasers, Tunable lasers, Optical resonators, Birefringence, Semiconductors, Laser systems engineering

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Proceedings Article | 3 May 2012 Paper

Experimental demonstration of an all optical flip flop memory

Kimberly Kaltenecker, Eric Donkor

Proceedings Volume 8397, 83970A (2012) https://doi.org/10.1117/12.921233

KEYWORDS: Polarization, Supercontinuum generation, Semiconductor optical amplifiers, Optical amplifiers, Beam splitters, Quantum memory, Spectrum analysis, Polarization control, Quantum communications, Semiconductors

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Proceedings Article | 3 June 2011 Paper

All-optical flip-flop memory for quantum computing

Eric Donkor

Proceedings Volume 8057, 80570A (2011) https://doi.org/10.1117/12.884508

KEYWORDS: Polarization, Quantum communications, Quantum memory, Optical amplifiers, Photons, Beam splitters, Interferometers, Superposition, Quantum computing, Semiconductor optical amplifiers

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Proceedings Article | 3 June 2011 Paper

Quantum computing with induced dipole-dipole forbidden transitions

Eric Donkor

Proceedings Volume 8057, 80570O (2011) https://doi.org/10.1117/12.884501

KEYWORDS: Chemical elements, Photons, Ytterbium, Quantum communications, Magnetism, Chemical species, Quantum computing, Quantum information processing, Absorption, Crystals

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Proceedings Article | 17 April 2010 Paper

Comparison of quantum key distribution over fiber optics network topologies

Eric Donkor

Proceedings Volume 7702, 77020D (2010) https://doi.org/10.1117/12.851879

KEYWORDS: Quantum key distribution, Stars, Fiber optic networks, Interferometers, Polarization, Single photon, Sensors, Network architectures, Telecommunications, Transmitters

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Proceedings Article | 16 April 2010 Paper

Terahertz generation in optical amplifiers

Eric Donkor

Proceedings Volume 7700, 77000H (2010) https://doi.org/10.1117/12.852744

KEYWORDS: Semiconductor optical amplifiers, Interferometers, Optical filters, Polarizers, Polarization, Optical amplifiers, Frequency combs, Electronic filtering, Linear filtering, Spectrum analysis

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Proceedings Article | 1 May 2009 Paper

Terahertz frequency generation by frequency mixing in semiconductor optical amplifiers

Eric Donkor

Proceedings Volume 7311, 731106 (2009) https://doi.org/10.1117/12.819460

KEYWORDS: Frequency combs, Optical amplifiers, Polarizers, Semiconductor optical amplifiers, Sum-frequency generation, Mirrors, Terahertz radiation, Optical filtering, Phase modulation, Optical filters

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Proceedings Article | 29 April 2009 Paper

A 1.28GSPS 12-bit optoelectronic analog-to-digital converter

Carlos Villa, Patrick Kumavor, Eric Donkor, Guanghai Jin

Proceedings Volume 7339, 73390G (2009) https://doi.org/10.1117/12.819454

KEYWORDS: Clocks, Optoelectronics, Electronic circuits, Multiplexers, Optical clocks, Computer programming, Analog electronics, Logic, Photodiodes, Quantization

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Proceedings Article | 29 April 2009 Paper

Tunable LYOT-filters

Eric Donkor, Patrick Kumavor, Carlos Villa

Proceedings Volume 7339, 73390B (2009) https://doi.org/10.1117/12.819457

KEYWORDS: Polarization, Polarizers, Optical filtering, Optical filters, Wave propagation interference, Imaging spectroscopy, Two wave mixing, Ranging, Telecommunications, Imaging systems

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Proceedings Article | 27 March 2008 Paper

Optically-synchronized encoder and multiplexer scheme for interleaved photonics analog-to-digital conversion

Carlos Villa, Patrick Kumavor, Eric Donkor

Proceedings Volume 6975, 69750E (2008) https://doi.org/10.1117/12.781672

KEYWORDS: Computer programming, Multiplexing, Multiplexers, Digital electronics, Photonics, Photodiodes, Electronics, Analog electronics, Channel projecting optics, Optoelectronics

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Photonics Analog-to-Digital Converters (ADCs) utilize a train of optical pulses to sample an electrical input waveform applied to an electrooptic modulator or a reverse biased photodiode. In the former, the resulting train of amplitude-modulated optical pulses is detected (converter to electrical) and quantized using a conversional electronics ADC- as at present there are no practical, cost-effective optical quantizers available with performance that rival electronic quantizers. In the latter, the electrical samples are directly quantized by the electronics ADC. In both cases however, the sampling rate is limited by the speed with which the electronics ADC can quantize the electrical samples. One way to increase the sampling rate by a factor N is by using the time-interleaved technique which consists of a parallel array of N electrical ADC converters, which have the same sampling rate but different sampling phase. Each operating at a quantization rate of fs/N where fs is the aggregated sampling rate. In a system with no real-time operation, the N channels digital outputs are stored in memory, and then aggregated (multiplexed) to obtain the digital representation of the analog input waveform. Alternatively, for real-time operation systems the reduction of storing time in the multiplexing process is desired to improve the time response of the ADC. The complete elimination of memories come expenses of concurrent timing and synchronization in the aggregation of the digital signal that became critical for a good digital representation of the analog signal waveform. In this paper we propose and demonstrate a novel optically synchronized encoder and multiplexer scheme for interleaved photonics ADCs that utilize the N optical signals used to sample different phases of an analog input signal to synchronize the multiplexing of the resulting N digital output channels in a single digital output port. As a proof of concept, four 320 Megasamples/sec 12-bit of resolution digital signals were multiplexed to form an aggregated 1.28 Gigasamples/sec single digital output signal.

Proceedings Article | 25 March 2008 Paper

Demonstration of an all-optical flip-flop using a Lyot filter and a semiconductor optical amplifier arrangement

Catherine Emmons, Patrick Kumavor, Eric Donkor

Proceedings Volume 6975, 697505 (2008) https://doi.org/10.1117/12.783638

KEYWORDS: Optical filtering, Semiconductor optical amplifiers, Optical fibers, Switches, Polarizers, Polarization, Light, Light sources, Optical isolators, Switching

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Proceedings Article | 24 March 2008 Paper

Non-destructive quantum measurement scheme for quantum states in superposition

Patrick Kumavor, Eric Donkor

Proceedings Volume 6976, 69760B (2008) https://doi.org/10.1117/12.779456

KEYWORDS: Quantum information, Superposition, Design for manufacturing, Particles, Quantum computing, Nondestructive evaluation, Computing systems, Surface plasmons, Optical spheres, Statistical analysis

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Proceedings Article | 24 March 2008 Paper

High speed optoelectronics polyphase scheme for sampling and demultiplexing RF analog signals

Carlos Villa, Patrick Kumavor, Aaron Feldstein, Jennifer Hernandez, Eric Donkor

Proceedings Volume 6975, 69750G (2008) https://doi.org/10.1117/12.781449

KEYWORDS: Optoelectronics, Analog electronics, Clocks, Photodiodes, Optical clocks, Signal processing, Electronics, Signal generators, Data conversion, Optical networks

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Proceedings Article | 7 May 2007 Paper

40 GSPS opto-electronic polyphase analog-to-digital converter

Carlos Villa, Eric Donkor, Michael Hayduk, Rebecca Bussjager

Proceedings Volume 6572, 657207 (2007) https://doi.org/10.1117/12.721366

KEYWORDS: Optoelectronics, Optical clocks, Clocks, Quantization, Optical networks, Electronic circuits, Analog electronics, Signal processing, Photodiodes, Integrated optics

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Proceedings Article | 25 April 2007 Paper

Demonstration of a six-user quantum key distribution network on a bus architecture

Patrick Kumavor, Alan Beal, Eric Donkor, Bing Wang

Proceedings Volume 6573, 65730Q (2007) https://doi.org/10.1117/12.720836

KEYWORDS: Networks, Quantum key distribution, Phase modulation, Polarization, Fermium, Frequency modulation, Quantum communications, Receivers, Phase shifts, Network architectures

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Proceedings Article | 18 October 2006 Paper

Terahertz comb radio frequency generation in nonlinear optical devices

Eric Donkor

Proceedings Volume 6373, 63730X (2006) https://doi.org/10.1117/12.687315

KEYWORDS: Optical amplifiers, Frequency combs, Semiconductor optical amplifiers, Semiconductor lasers, Sum-frequency generation, Transient nonlinear optics, Laser damage threshold, Spectrum analysis, Fiber amplifiers, Phase modulation

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Proceedings Article | 19 May 2006 Paper

Demonstration of a 5.12 GHz optoelectronics sampling circuit for analog-to-digital converters

Carlos Villa, Patrick Kumavor, Bruce Burgess, Eric Donkor

Proceedings Volume 6236, 623607 (2006) https://doi.org/10.1117/12.668902

KEYWORDS: Optical clocks, Photodiodes, Optoelectronics, Clocks, Optical circuits, Signal processing, Channel projecting optics, Switches, Multiplexing, Resistors

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Proceedings Article | 12 May 2006 Paper

Quantum cryptography on multi-user network architectures

Patrick Kumavor, Alan Beal, Susanne Yelin, Eric Donkor, Bing Wang

Proceedings Volume 6244, 62440J (2006) https://doi.org/10.1117/12.665651

KEYWORDS: Photons, Quantum key distribution, Stars, Networks, Sensors, Modulators, Phase modulation, Interferometers, Quantum communications, Receivers

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SPIE Journal Paper | 1 February 2006

Spatiotemporal analytical model for coupled-cavity soliton fiber lasers

Eric Donkor, Mohammad Noman, Patrick Kumavor

OE, Vol. 45, Issue 02, 024202, (February 2006) https://doi.org/10.1117/12.10.1117/1.2172915

KEYWORDS: Mode locking, Fiber lasers, Solitons, Picosecond phenomena, Fourier transforms, Laser systems engineering, Partial differential equations, Optical engineering, Systems modeling, Pulsed laser operation

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Proceedings Article | 25 May 2005 Paper

Progress in the nondestructive measurement of states in quantum communication and computation systems

Eric Donkor, Patrick Kumavor

Proceedings Volume 5815, (2005) https://doi.org/10.1117/12.606171

KEYWORDS: Quantum communications, Computing systems, Logic, Quantum computing, Photons, Quantum information, Nondestructive evaluation, Telecommunications, Phase measurement, Phase shift keying

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Proceedings Article | 24 May 2005 Paper

High speed multi-channel optical sampling technique for analog-to-digital converters

Mohammad Noman, Eric Donkor, Michael Hayduk, Rebecca Bussjager

Proceedings Volume 5814, (2005) https://doi.org/10.1117/12.605420

KEYWORDS: Optical clocks, Photodiodes, Channel projecting optics, Clocks, Pulsed laser operation, Mode locking, Laser sources, Optical circuits, Optoelectronics, Switches

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Proceedings Article | 24 August 2004 Paper

Orthogonal and polarization-entangled photon-pair arrangement for decoherence-free quantum measurement

Patrick Kumavor, Eric Donkor, Bing Wang

Proceedings Volume 5436, (2004) https://doi.org/10.1117/12.542936

KEYWORDS: Chemical species, Photons, Single photon, Superposition, Quantum computing, Rubidium, Photon polarization, Quantum information, Computing systems, Composites

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Proceedings Article | 3 August 2004 Paper

Mode-locking schemes for fiber lasers using auxiliary cavities

Sonia Sanchez, Eric Donkor

Proceedings Volume 5435, (2004) https://doi.org/10.1117/12.542605

KEYWORDS: Fiber lasers, Mode locking, Raman spectroscopy, Optical isolators, Systems modeling, Pulsed laser operation, Dispersion, Solitons, Semiconductor lasers, Modulation

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Proceedings Article | 4 August 2003 Paper

Orthogonally arranged probes for quantum nondemolition measurement

Patrick Kumavor, Eric Donkor

Proceedings Volume 5105, (2003) https://doi.org/10.1117/12.497989

KEYWORDS: Photons, Chemical species, Quantum computing, Rubidium, Superposition, Computing systems, Quantum information, Computer engineering, Roads, Quantum communications

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Proceedings Article | 14 July 2003 Paper

Modeling of noise in actively and passively mode-locked fiber laser systems

Taika Bilbo, Eric Donkor

Proceedings Volume 5104, (2003) https://doi.org/10.1117/12.487077

KEYWORDS: Signal to noise ratio, Fiber lasers, Systems modeling, Modulation, Laser systems engineering, Mode locking, Instrument modeling, Computing systems, Pulsed laser operation, Solitons

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Proceedings Article | 1 August 2002 Paper

10 GSPS 10-bit optical analog-to-digital converter

Eric Donkor, J. Green, Michael Hayduk, Rebecca Bussjager

Proceedings Volume 4732, (2002) https://doi.org/10.1117/12.477437

KEYWORDS: Clocks, Optical components, Photodiodes, Modulators, Interfaces, Mode locking, Optical clocks, Switches, Optoelectronics, Analog electronics

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Proceedings Article | 1 August 2002 Paper

Prospects and challenges for the realization of quantum computers

Eric Donkor, Patrick Kumavor

Proceedings Volume 4732, (2002) https://doi.org/10.1117/12.477423

KEYWORDS: Quantum computing, Chemical species, Computing systems, Photons, Quantum information, Quantum communications, Data processing, Logic, Optical resonators, Quantum electrodynamics

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A quantum computer is an information processing systems that utilizes invertible logic elements to perform reversible logic operations. It can also perform irreversible logic operations. Thus, in principle, it can compute the information transformation rule of any physical system for which the rules are known. A quantum computer can be designed to perform parallel computation on a massive scale, and therefore can have fast execution time. The basic structure of a quantum computer includes 1) a quantum register, or a configuration of quantum-mechanical energy states to store quantum bits (qubits) of information, 2) a quantum processor designed to induce quantum mechanical interactions between any arbitrary pair of qubits to perform a specified logic operations. 3) a quantum bus or network for transferring qubits from the registers to the processor and vice versa, and 4) a physical mechanisms for non-destructive measurements on the qubits. Quantum mechanical systems with the potential for realizing quantum computers include ion-trap quantum computers, cavity quantum electrodynamics quantum computers, photon-trap quantum computers, nuclear magnetic resonance quantum computers, and superconducting quantum computers. Decoherence [1 ,2] possesses the greatest challenge to the practical realization of quantum computers, because it causes the collapse of the quantum superposition states that contain the vital results of qubit manipulations. Decoherence processes are measurement-induced, noise-induced, and environment-induced [3] . Schemes to correct or circumvent the detrimental effects of decoherence in quantum processors fall into active error-correction schemes, and passive error-correction schemes [4]. Active error-correction schemes are designed to detect and correct for errors during computation. Algorithmic fault-tolerant computing [5, 6] is the most promising active-error correction scheme. In fault-tolerant computing, ancillary qubits are encoded into data blocks of the quantum registers. They are then used to detect errors. Once detected appropriate error-correction algorithms are then employed to rectify the errors. The implementation of fault-tolerant quantum computing has been hampered by the lack of practical universal set of quantum gates that can process an encoded data without propagating or introducing additional errors. Passive-error correction schemes [7] attempt to finding Hilbert subspaces that are intrinsically free of decoherence effects [8]. The key to quantum computing in such a decoherence-free subspace is the identification of mechanisms that can effect quantum mechanical interactions between the decoherence-free states without taking the system out of the decoherence-free environment. The challenge is to identify and employ physical processes that can achieve these goals.

Proceedings Article | 26 July 2001 Paper

Optical subcarrier generation and multiplexing scheme for all-optical networks

Sonia Sanchez, Eric Donkor

Proceedings Volume 4386, (2001) https://doi.org/10.1117/12.434225

KEYWORDS: Multiplexing, Modulation, Channel projecting optics, Semiconductor lasers, Semiconductor optical amplifiers, Radio optics, Network architectures, Laser damage threshold, Internet, Dense wavelength division multiplexing

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Proceedings Article | 26 July 2001 Paper

High-repetition-rate spectrally synthesized modelocked laser pulses

Eric Donkor, Taika Bilbo

Proceedings Volume 4386, (2001) https://doi.org/10.1117/12.434206

KEYWORDS: Semiconductor lasers, Mode locking, Systems modeling, Q switches, Gain switching, Laser damage threshold, Pulsed laser operation, Laser cutting, Ranging, Optical communications

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Proceedings Article | 26 July 2001 Paper

Prospects of electric-dipole forbidden transitions for qubit logic

Eric Donkor

Proceedings Volume 4386, (2001) https://doi.org/10.1117/12.434214

KEYWORDS: Quantum communications, Chemical elements, Quantum information processing, Magnetism, Quantum computing, Logic, Ions, Computing systems, Chemical species, Entangled states

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Proceedings Article | 18 July 2000 Paper

All-optical high-speed analog-to-encoded-digital conversion of optically sampled signals

Eric Donkor, Michael Hayduk

Proceedings Volume 4042, (2000) https://doi.org/10.1117/12.391916

KEYWORDS: Modulators, Photodiodes, Telecommunications, Quantization, Mode locking, Switches, Radar, Signal processing, Optical signal processing, Laser sources

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Proceedings Article | 18 July 2000 Paper

Radio frequency generation with cascaded semiconductor amplifier/laser oscillator

Eric Donkor, Sonia Sanchez

Proceedings Volume 4042, (2000) https://doi.org/10.1117/12.391913

KEYWORDS: Semiconductor lasers, Semiconductor optical amplifiers, Radio optics, Optical amplifiers, Laser damage threshold, Semiconductors, Spectrum analysis, Sum-frequency generation, Oscillators, Feedback signals

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Proceedings Article | 13 July 2000 Paper

Protecting software agents from malicious hosts using quantum computing

John Reisner, Eric Donkor

Proceedings Volume 4047, (2000) https://doi.org/10.1117/12.391967

KEYWORDS: Quantum computing, Computer security, Network security, Information security, Evolutionary algorithms, Computing systems, Symmetric-key encryption, Adaptive optics, Artificial intelligence, Cryptography

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Proceedings Article | 26 November 1999 Paper

All-optical switching in semiconductor-doped nonlinear fibers

Eric Donkor

Proceedings Volume 3847, (1999) https://doi.org/10.1117/12.371240

KEYWORDS: Switching, Optical fibers, Switches, Picosecond phenomena, Semiconductors, Silica, Nonlinear optics, Femtosecond phenomena, Glasses, Optical switching

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Proceedings Article | 26 July 1999 Paper

Optically generated terahertz comb radio frequencies

Eric Donkor

Proceedings Volume 3714, (1999) https://doi.org/10.1117/12.354670

KEYWORDS: Radio optics, Optical amplifiers, Reflectivity, Semiconductor optical amplifiers, Frequency combs, Phase shift keying, Modulators, Optical testing, Frequency division multiplexing, Heterodyning

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Proceedings Article | 31 July 1998 Paper

Observations of nonlinear saturation effects in amorphous zinc selenide

George King, Eric Donkor

Proceedings Volume 3384, (1998) https://doi.org/10.1117/12.317650

KEYWORDS: Zinc, Wave propagation, Laser beam diagnostics, Continuous wave operation, Argon ion lasers, Sensors, Spectroscopy, Beam propagation method, Refraction, Beam shaping

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Proceedings Article | 31 July 1998 Paper

Optical subcarrier multiplexing for multigigabit optical communication

Eric Donkor

Proceedings Volume 3384, (1998) https://doi.org/10.1117/12.317655

KEYWORDS: Multiplexing, Optical amplifiers, Wavelength division multiplexing, Optical communications, Broadband telecommunications, Data communications, Telecommunications, Fiber amplifiers, Terahertz radiation, Optical isolators

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Proceedings Article | 1 July 1997 Paper

Effect of pump signal on self lensing in semiconductor doped glass

George King, Eric Donkor

Proceedings Volume 3075, (1997) https://doi.org/10.1117/12.277631

KEYWORDS: Semiconductors, Glasses, Laser beam diagnostics, Modulation, Light sources, Argon, Phase modulation, Zinc, Beam propagation method, Refraction

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Proceedings Article | 1 July 1997 Paper

Characterization of the linear properties of a CdSSe-doped fiber

Eric Donkor, Raymond Boncek

Proceedings Volume 3075, (1997) https://doi.org/10.1117/12.277632

KEYWORDS: Absorption, Transmittance, Glasses, Fiber characterization, Sensors, Cladding, Light sources, Infrared cameras, Tungsten, Spectrum analysis

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Proceedings Article | 1 July 1997 Paper

Raman states as sets for quantum computing

Eric Donkor

Proceedings Volume 3076, (1997) https://doi.org/10.1117/12.277645

KEYWORDS: Quantum communications, Quantum computing, Raman spectroscopy, Logic, Computing systems, Chemical species, Quantum optics, Quantum dots, Crystals, Laser crystals

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Proceedings Article | 1 July 1997 Paper

Nonlinear characterization of semiconductor-doped fiber

Eric Donkor, Raymond Boncek

Proceedings Volume 3075, (1997) https://doi.org/10.1117/12.277633

KEYWORDS: Refractive index, Transmittance, Semiconductors, Fiber characterization, Glasses, Sensors, Particles, Neodymium lasers, Fiber lasers, Absorption

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Proceedings Article | 6 June 1997 Paper

Induced focusing in ZnSe

George King, Eric Donkor

Proceedings Volume 2994, (1997) https://doi.org/10.1117/12.275586

KEYWORDS: Argon, Sensors, Oscilloscopes, Argon ion lasers, Refraction, Transmittance, Continuous wave operation, Spatial filters, Modulation, Systems engineering

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Proceedings Article | 30 June 1995 Paper

Fiber grating integrated with Kerr nonlinear fiber for all-optical switching

Eric Donkor

Proceedings Volume 2481, (1995) https://doi.org/10.1117/12.212728

KEYWORDS: Switching, Refractive index, Nonlinear optics, Absorption, Semiconductors, Polarization, Phase modulation, Picosecond phenomena, Switches, Signal attenuation

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SPIE Journal Paper | 1 May 1995

VHDL as a modeling and simulation platform for optical communication systems and devices

Khurram Kazi, Eric Donkor

OE, Vol. 34, Issue 05, (May 1995) https://doi.org/10.1117/12.10.1117/12.199876

KEYWORDS: Clocks, Picosecond phenomena, Data modeling, Wavelength division multiplexing, Signal processing, Systems modeling, Modeling and simulation, Instrument modeling, Telecommunications, Data conversion

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SPIE Journal Paper | 1 December 1994

Simulation of phase modulation in cascaded Kerr birefringent fibers

Eric Donkor

OE, Vol. 33, Issue 12, (December 1994) https://doi.org/10.1117/12.10.1117/12.183394

KEYWORDS: Modulators, Optical fibers, Phase modulation, Phase shift keying, Modulation, Nonlinear optics, Optical switching, Differential equations, Electronics, Data communications

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Proceedings Article | 3 June 1994 Paper

Demonstration of an optically transparent ATM packet switch node

Raymond Boncek, Paul Prucnal, Alberto Bononi, Jason Sokoloff, John Stacy, Harold Bare, Eric Donkor

Proceedings Volume 2216, (1994) https://doi.org/10.1117/12.177322

KEYWORDS: Switches, Asynchronous transfer mode, Signal detection, Transmittance, Multiplexing, Optical fibers, Electrical engineering, Optoelectronic devices, Packet switching, Switching

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Proceedings Article | 3 June 1994 Paper

Analytical investigation of low-power all-optical switching using cascaded Kerr-phase modulators

Eric Donkor

Proceedings Volume 2216, (1994) https://doi.org/10.1117/12.177333

KEYWORDS: Switching, Optical fibers, Circuit switching, Phase modulation, Modulation, Modulators, Optical circuits, Switches, Nonlinear optics, Optical switching

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Proceedings Article | 1 November 1993 Paper

High-speed switching matrix for fiber optic communications using crossphase modulation techniques

Eric Donkor, Shean-Yih Chiu

Proceedings Volume 2024, (1993) https://doi.org/10.1117/12.161336

KEYWORDS: Switching, Switches, Fiber optic communications, Telecommunications, Camera shutters, Fiber optics, Modulation, Cadmium, Signal attenuation, Phase shifts

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Proceedings Article | 2 December 1992 Paper

Optically activated switching in a ZnS/CdTe heterostructure for high-power frozen-wave generation

Eric Donkor, Alain Andriamasy

Proceedings Volume 1703, (1992) https://doi.org/10.1117/12.138390

KEYWORDS: Switches, Heterojunctions, Microwave radiation, Zinc, Switching, Optical amplifiers, Integrated optics, Photonic integrated circuits, Picosecond phenomena, Wave propagation

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Proceedings Article | 12 May 1992 Paper

Optically activated switching in a ZnSe/GaAs heterostructure

Eric Donkor

Proceedings Volume 1632, (1992) https://doi.org/10.1117/12.59071

KEYWORDS: Switches, Switching, Heterojunctions, Gallium arsenide, Resistance, Electrons, Pulsed laser operation, Capacitors, Absorption, Silica

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Proceedings Article | 1 December 1990 Paper

A two-dimensional perturbation technique to model ion-implanted GaAs MESFET for millimeter-wave systems

E. Donkor

Proceedings Volume 1514, 151417 (1990) https://doi.org/10.1117/12.2301453

KEYWORDS: Field effect transistors, Gallium arsenide, Systems modeling, Systems engineering, Doping, Neodymium

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Showing 5 of 63 publications

Proceedings Volume Editor (34)

SPIE Conference Volume | 21 June 2023

Quantum Information Science, Sensing, and Computation XV

SPIE Conference Volume | 22 June 2022

Quantum Information Science, Sensing, and Computation XIV

SPIE Conference Volume | 13 May 2021

Quantum Information Science, Sensing, and Computation XIII

SPIE Conference Volume | 9 June 2020

Quantum Information Science, Sensing, and Computation XII

SPIE Conference Volume | 9 July 2019

Quantum Information Science, Sensing, and Computation XI

Showing 5 of 34 publications

Conference Committee Involvement (37)

Quantum Information Science, Sensing, and Computation XVI

22 April 2024 | National Harbor, Maryland, United States

Quantum Information Science, Sensing, and Computation XV

3 May 2023 | Orlando, Florida, United States

Quantum Information Science, Sensing, and Computation XIV

6 April 2022 | Orlando, Florida, United States

Quantum Information Science, Sensing, and Computation XIII

12 April 2021 | Online Only, Florida, United States

Quantum Information Science, Sensing, and Computation XII

27 April 2020 | Online Only, California, United States

Quantum Information Science, Sensing, and Computation XI

18 April 2019 | Baltimore, MD, United States

Quantum Information Science, Sensing, and Computation X

18 April 2018 | Orlando, FL, United States

Quantum Information and Computation XV

20 April 2016 | Baltimore, MD, United States

Quantum Information and Computation XIII

22 April 2015 | Baltimore, MD, United States

Photonic Applications for Aviation, Aerospace, Commercial, and Harsh Environments V

19 August 2014 | San Diego, California, United States

Quantum Information and Computation XII

8 May 2014 | Baltimore, MD, United States

Quantum Information and Computation XI

2 May 2013 | Baltimore, Maryland, United States

Quantum Information and Computation X

26 April 2012 | Baltimore, Maryland, United States

Enabling Photonics Technologies for Defense, Security, and Aerospace Applications VIII

23 April 2012 | Baltimore, Maryland, United States

Quantum Information and Computation IX

28 April 2011 | Orlando, Florida, United States

Enabling Photonics Technologies for Defense, Security, and Aerospace Applications VII

25 April 2011 | Orlando, Florida, United States

Quantum Information and Computation VIII

8 April 2010 | Orlando, Florida, United States

Enabling Photonics Technologies for Defense, Security, and Aerospace Applications VI

5 April 2010 | Orlando, Florida, United States

Quantum Information and Computation VII

16 April 2009 | Orlando, Florida, United States

Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V

13 April 2009 | Orlando, Florida, United States

Quantum Information and Computation VI

19 March 2008 | Orlando, Florida, United States

Enabling Photonic Technologies for Defense, Security, and Aerospace Applications IV

17 March 2008 | Orlando, Florida, United States

Quantum Information and Computation V

11 April 2007 | Orlando, Florida, United States

Enabling Photonic Technologies for Defense, Security, and Aerospace Applications III

9 April 2007 | Orlando, Florida, United States

Enabling Photonics Technologies for Defense, Security, and Aerospace Applications II

20 April 2006 | Orlando (Kissimmee), Florida, United States

Quantum Information and Computation IV

17 April 2006 | Orlando (Kissimmee), Florida, United States

Enabling Photonics Technologies for Defense, Security, and Aerospace Applications

31 March 2005 | Orlando, Florida, United States

Quantum Information and Computation III

29 March 2005 | Orlando, Florida, United States

Enabling Photonic Technologies for Aerospace Applications VI

14 April 2004 | Orlando, Florida, United States

Quantum Information and Computation II

12 April 2004 | Orlando, Florida, United States

Enabling Photonic Technologies for Aerospace Applications V

23 April 2003 | Orlando, Florida, United States

Quantum Information and Computation

21 April 2003 | Orlando, Florida, United States

Quantum Computing III

2 April 2002 | Orlando, FL, United States

Photonic and Quantum Technologies for Aerospace and Applications IV

1 April 2002 | Orlando, FL, United States

Quantum Computing II

18 April 2001 | Orlando, FL, United States

Photonic and Quantum Technologies for Aerospace Applications III

17 April 2001 | Orlando, FL, United States

Quantum Computing

26 April 2000 | Orlando, FL, United States

Showing 5 of 37 Conference Committees

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