| Study on Locally Confined Deposition of Si Nanocrystals in High-Aspect-Ratio Si Nano-Pillar Array for Nano-Electronic and Nano-Photonic Applications |
23 Feb 2010 |
11 pages |
| Authors:
Hao-Chung Kuo; NATIONAL CHIAO TUNG UNIV HSINCHU (TAIWAN)
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 | This project established versatile processing techniques for improving the internal and external quantum efficiencies of Si MOSLEDs via detuning the size and density of high-aspect-ratio Si nanorods and buried Si nanospheres. |
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| Gallium Nitride UV Single Photon Source |
29 Jan 2010 |
9 pages |
| Authors:
Seong-Ju Park; GWANGJU INST OF SCIENCE AND TECHNOLOGY (SOUTH KOREA)
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| This proposal aims to develop the electrically driven single photon sources for applications in quantum computing and quantum cryptography. The development of single photon devices is an important issue and has much potential in the field of modern photonics and optical technology in conjunction with nanotechnology. |
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| Fundamental Modeling and Design Strategies in Computational Photonics-Applications to Lasercom Through Clouds and Electro-Optical/Nanophotonics |
31 Dec 2009 |
16 pages |
| Authors:
Jerome V Moloney; ARIZONA UNIV BOARD OF REGENTS TUCSON
|
| This summary highlights significant advances and discoveries under the support of the above grant. Two broad non-overlapping research topic areas were addressed in the project: I. Lasercom through clouds using novel partially spatially and temporally coherent laser beams, and II. Computational nanophotonics, plasmonics and metamaterials applied to new algorithm development with applications to atom/quantum dot traps, nonlinear harmonic generation in metamaterials and novel plasmonic high density data storage. The lasercom ... |
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| Design and Fabrication of Robust Photonic Crystals |
16 Dec 2009 |
6 pages |
| Authors:
Toshio Katsuyama; FUKUI UNIV (JAPAN)
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| The photonic crystal structure, that is robust for the structural fluctuation caused by the inevitable incompleteness of the fabrication process, will be studied. The final goals include (1) optimization of the deeply etched 1-D (one-dimension), 2-D, and 3-D photonic crystal structures, that are robust for the inevitable fabrication incompleteness, and (2) establishment of the generalized rule of the robustness for all kinds of photonic crystals, which is the key technology ... |
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| MURI Center for Photonic Quantum Information Systems |
16-Oct-2009 |
26 pages |
| Authors:
Paul Kwiat; Jelena Vuckovic; STANFORD UNIV CA
|
| We have continued the development of several photonic quantum technologies: single-photon and entangled-photon sources from quantum dots and parametric down-conversion; solid-state quantum gates based on quantum dots in semiconductors and on NV centers in diamond; quantum memories using optical storage systems; and high-efficiency single-photon detectors, using optimized visible light photon counters, superconducting bolometers, and frequency upconverters (to be able to detect telecommunication wavelengths using superior visible-wavelength detectors). For most of ... |
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| Stability of Fiber Optic Networked Decentralized Distributed Engine Control Under Time Delays |
Aug-2009 |
39 pages |
| Authors:
Rama K Yedavalli; Rohit K Belapurkar; Behzad Moslehi; OHIO STATE UNIV COLUMBUS
|
| The importance of distributed architecture for turbine engine control is well discussed in literature. Distributed turbine engine control architecture enables the use of new performance optimization methods along with achieving weight reduction. Communication constraints like time delays and packet dropouts can limit the performance of distributed engine control. In this paper, we propose a controller which will stabilize the time delay system based on delay independent condition. The controller under ... |
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| Q-Switched and Mode Locked Short Pulses from a Diode Pumped, YB-Doped Fiber Laser |
26-Mar-2009 |
115 pages |
| Authors:
Seth M Swift; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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| A diode-pumped, ytterbium (Yb)-doped fiber laser system was designed and demonstrated to operate in continuous wave (cw), passively Q-switched and possibly passively mode locked operation. To our knowledge, this was the first fiber laser oscillator built at the Air Force Institute of Technology. A Cr4+:YAG (Chromium: Ytterbium Aluminum Garnett) crystal was used as a saturable absorber to generate Q-switched pulses. Attempts to mode lock the laser were performed using a ... |
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| Linearized Optically Phase-Modulated Fiber Optic Links for Microwave Signal Transport |
03-Mar-2009 |
164 pages |
| Authors:
Bryan M Hass; MARYLAND UNIV COLLEGE PARK LAB FOR PHYSICAL SCIENCES
|
| Several novel phase-modulated fiber optic links for analog or microwave signal transport up to at least 20 GHz frequency are theoretically developed and experimentally demonstrated. Each link uses a linearization technique exploiting the Lithium Niobate modulator's electro-optic anisotropy between orthogonal crystallographic axes that has not previously been applied to phase-modulated links. This technique and its variants suppress the dominant third-order distortion product to extend the sub-octave spur-free dynamic range of ... |
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| Thermomechanical Properties of Center-Reinforced Aluminum |
Mar-2009 |
300 pages |
| Authors:
Geofrey S Cox; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The rule of mixture approach was shown to produce an accurate theoretical prediction of the room temperature elastic modulus values when compared to the experimental results. The laminate's modulus value remained relatively constant over the -55C to 80C temperature range, indicating stable behavior despite temperature changes. Blunt notch tests also revealed that the laminate's strength was not significantly reduced due to the presence of small holes. Finally, fatigue testing demonstrated ... |
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| Photonic Crystals for Infrared Nonlinear Optics |
Feb-2009 |
|
| Authors:
Yoel Fink; Marin Soljacic; Peter T Rakich; Ayman Abouraddy; Zachary Ruff; Ofer Shopira; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
 | Here we summarize our progress in the development of 2- to 5-micron wavelength supercontinuum sources through grant number FA8650-05-C-5426 over the life of the program. The key developments over the past 3 years include 1) A proof-of-principle demonstration of a novel, efficient mid-IR Raman laser source in silica materials system, yielding efficient spectral transfer to 2.41 microns. (The demonstrated system can be naturally extended in wavelength to 5microns and beyond); ... |
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| Ultra-low Sulfur Diesel Classification with Near-Infrared Spectroscopy and Partial Least Squares |
13-Jan-2009 |
7 pages |
| Authors:
Mark H Hammond; Jeffrey A Cramer; Robert E Morris; Susal L Rose-Pehrsson; NAVAL RESEARCH LAB WASHINGTON DC
|
| The United States Environmental Protection Agency (EPA) will have regulations in effect no later than 2010 requiring sulfur content to be no greater than 15 parts per million (ppm) for on-road, off-road, and marine diesel fuel applications. Hydrotreatment will remove sulfur, but it also removes other polar compounds that impart fuel lubricity. The rapid and accurate discrimination of ultra-low sulfur diesel (ULSD) fuels is then important for both regulation compliance ... |
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| Comparison of the Noise Penalty of a Raman Amplifier Versus an Erbium-doped Fiber Amplifier for Long-haul Analog Fiber-optic Links |
17-Dec-2008 |
17 pages |
| Authors:
Preetpaul S Devgan; John F Diehl; Vincent J Urick; Keith J Williams; NAVAL RESEARCH LAB WASHINGTON DC
|
| A Raman amplifier is compared to an erbium-doped fiber amplifier for a 14 km analog fiber-optic link requiring the amplifier pump at the end of the link. The noise penalty for each amplifier at a given photocurrent is measured and compared. An analytical expression comparing the analog metrics as a function of noise penalty and photocurrent for different amplifiers is derived and used. The Raman amplifier has a lower noise ... |
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| Development Of Frequency Transfer Via Optical Fiber Link at NICT |
01-Dec-2008 |
11 pages |
| Authors:
Mizuhiko Hosokawa; Motohiro Kumagai; Mihu Fujieda; Tadahiro Gotoh; NATIONAL INST OF INFORMATION AND COMMUNICATIONS TECHNOLOGY (NICT) TOKYO (JAPAN)
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| NICT in Japan has developed a radio frequency (RF) dissemination system using an optical fiber link. The phase noise induced during the transmission through the optical fiber is actively cancelled by a compensation system. A proving test has been conducted on the 114-km urban telecom optical fiber link in Tokyo. The transfer stability in the 10-18 level at an averaging time of 1 day was achieved. In the last few ... |
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| Observation of Nonlinear Transmission Enhancement in Cavities Filled With Nonlinear Organic Materials |
01-Nov-2008 |
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| Authors:
Nasser Peyghambarian; ChuanXiang Sheng; Jayan Thomas; Brian Kimball; Dan T Nguyen; Robert Norwood; Diane M Steeves; ARIZONA UNIV TUCSON
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| We show experimental and theoretical results for enhancement of nonlinear transmission (NT) in moderate finesse cavities filled with nonlinear organic materials (NLOM). Our design for enhancement of nonlinear transmission using micro NLOM cavities compared with reference samples of the same material show that single cavities can enhance the nonlinear response by a factor of 10 or greater under high-absorption conditions. Further enhancement can be achieved in multiple-cavity structures. Other advantages ... |
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| Photonic Front-End and Comparator Processor for a Sigma-Delta Modulator |
01-Sep-2008 |
85 pages |
| Authors:
Kenny E Escobar; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis examines the role of photonics and integrated optics (IO) for use in analog-to-digital conversion in electronic warfare (EW) intercept receivers. The IO approach uses a continuous wave (CW) distributed feedback (DFB) laser diode at a peak wavelength of 1550 nm to oversample two Mach-Zehnder interferometers (MZIs). The MZIs are part of sigma-delta ( ) modulator-based analog-to-digital converter (ADC) oversampling architecture. A ring resonator accumulator is embedded within a ... |
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| Deterministic Entangled Nanosource |
Aug-2008 |
10 pages |
| Authors:
Galina Khitrova; ARIZONA UNIV TUCSON
|
| During the three years of this grant, conclusions were reached that are important for the future of semiconductor cavity QED utilizing photonic crystal nanocavities. A new way was found to scan the cavity mode by condensation of xenon or nitrogen while keeping the quantum dot cold to minimize dephasing. Absorption was shown to reduce the cavity Q when the dot density is 400 per square micron. Lasing with a soft ... |
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| Stimulated Brillouin Scattering Phase Conjugation in Fiber Optic Waveguides |
01-Jul-2008 |
199 pages |
| Authors:
Steven M Massey; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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| The objective of this research effort was to demonstrate the path to continuous wave, coherent beam combination through stimulated Brillouin scattering phase conjugation in optical fiber. This work experimentally determined the fiber parameters necessary for phase conjugation in step-index optical fiber. Continuous wave phase conjugation using stimulated Brillouin scattering in step-index fibers was achieved for the first time with a fidelity of 0.8 and a threshold power of 16 W ... |
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| Spaceborne Fiber Optic Data Bus (SFODB) |
01-Jun-2008 |
5 pages |
| Authors:
J W Bretthauer; C H Chalfant; F J Orlando; E Rezek; M Sawyer; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION GREENBELT MD GODDARD SPACE FLIGHT CENTER
|
| Spaceborne Fiber Optic Data Bus (SFODB) is an IEEE 1393 compliant, gigabit per second, fiber optic network specifically designed to support the real-time, on-board data handling requirements of remote sensing spacecraft. The network is fault tolerant, highly reliable, and capable of withstanding the rigors of launch and the harsh space environment. SFODB achieves this operational and environmental performance while maintaining the small size, light weight, and low power necessary for ... |
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| Future Optical Communications Systems |
Jun-2008 |
118 pages |
| Authors:
Donn Forbes; OPTOELECTRONICS INDUSTRY DEVELOPMENT ASSOCIATION WASHINGTON DC
|
| Global telecommunications revenue approached $3 trillion in 2006, a growth of 11.2% over 2005. In 2006, the international segment achieved over $2 trillion for the first time, while the United States segment achieved $945 billion. In the transport services market, wireless continues to grow over landline, a trend which is expected to continue. Capital expenditure as a percentage of revenue for U.S. wireless and wire-line telecom service providers has stabilized ... |
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| Ensemble Techniques for Determining Globally Optimal Designs for Problems with Broadly Stated Design Objectives |
27-Apr-2008 |
4 pages |
| Authors:
Chunming Wang; Gary I Rosen; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES
|
| In this project we have investigated the use of global optimization techniques for device design problems in photonics and electronics. Using several concrete device design problems as guides, we have defined a sub-class of global optimization problems with high-dimensional design space as the main focus of our effort. We have evaluated optimization approaches including Genetic Algorithm and Simulated Annealing for this class of problems. This evaluation confirmed our previous experience ... |
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| Characterization of an Electro-Absorption Modulator Design With High-Dynamic Range for Broadband Analog Applications |
Mar-2008 |
15 pages |
| Authors:
Paul Yu; Ivan Shubin; Terrance McDonald; Charles Schick; Paul Cook; Henry Zmuda; Songsheng Tan; Nancy Stoffel; Brian McKeon; Richard Michalak; Reinhard Erdmann; Rebecca Bussjager; Xiaobo Xie; AIR FORCE RESEARCH LAB ROME NY
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| An electro-absorption modulator (EAM) is designed to optimize dynamic range performance over 20 GHz bandwidth. The single stripe waveguide enables an extremely compact and integrated package to be fabricated with single mode fiber pigtails. The transfer function's shape permits suppression of higher order intermodulation products, yielding a spur-free dynamic range exceeding that of Mach-Zehnder designs. A dilute optical core diverts energy flow from absorbing layers into a low loss waveguide; ... |
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| Bio-Inspired Organic/Inorganic Hybrid Electronic and Photonic Materials and Structures |
31 DEC 2007 |
10 pages |
| Authors:
Alex K-Y. Jen; Mehmet Sarikaya; David Ginger; WASHINGTON UNIV SEATTLE DEPT OF MATERIALS SCIENCE AND ENGINEERING
|
| The goal of this project was to use DNA and protein as templates to assemble nanoparticles and functional molecules for photonic and electronic applications such as plasmon-enhanced fluorescence and surface-enhanced Raman scattering (SERS) (Fig. 1). Towards this goal, we have utilized both genetic and materials engineering tools. We have followed the molecular biomimetic approach in the assembly of nanoparticles. We have developed protocols using involving biological attachment of nanoparticles and ... |
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| Towards Fieldable Rapid Bioagent Detection: advanced Resonant Optical Waveguide and Biolayer Structures for Integrated Biosensing |
NOV 2007 |
23 pages |
| Authors:
Lawrence A. Hornak; Dimitris Korakakis; Aaron Timperman; WEST VIRGINIA UNIV RESEARCH CORP MORGANTOWN
|
| This research project established the understanding necessary for the stacked planar affinity-regulated resonate optical waveguide (SPARROW) architecture to serve as a transducer device platform for rapid biomolecular detection. SPARROW structures have been grown with waveguide losses of less than 1 dB/cm. Thin biolayers of less than 10 nm were achieved and SAM attachment to polycrystalline surfaces studied. SPARROW transducer measurements were conducted using sucrose analyte solutions applied to the top ... |
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| An Evaluation of Compact Laser Drivers for Field-Deployed Analog Fiber-Optic Systems |
31 OCT 2007 |
|
| Authors:
Vincent J. Urick; Preetpaul S. Devgan; Lee A. Swingen; John F. Diehl; NAVAL RESEARCH LAB WASHINGTON DC
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| Various laser drivers are analyzed experimentally to determine the impact on the performance of an analog photonic link. For field-deployed units, the NRL-designed supply provides superior noise performance over commercial devices, but the lowest noise is achieved via a bench-top low-noise laser driver. |
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| Flat Ridge Fiber for Fundamental Model Power Scaling From Single Aperture |
29-Oct-2007 |
6 pages |
| Authors:
Per Stenius; LIEKKI OY LOHJA (FINLAND)
|
| This report results from a contract tasking Liekki Oy as follows: (i). Design, Growth and Fabrication of Preforms. At least 3-4 preforms with 2 or more different core dimensions and refractive indices will be produced. Early design and simulation work will be carried out to provide several iterations of target cross sections for the composite ridge fiber. Preliminary evaluations indicated that the area of the Yb doped core can be ... |
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| Measurement of Chromatic Dispersion using the Baseband Radio-Frequency Response of a Phase-Modulated Analog Optical Link Employing a Reference Fiber |
19 SEP 2007 |
20 pages |
| Authors:
Jason D. McKinney; John Diehl; NAVAL RESEARCH LAB WASHINGTON DC
|
| In this work we demonstrate a new technique for measuring the chromatic dispersion of an optical fiber using the baseband RF response of a phase-modulated analog optical link in concert with a well-characterized fiber that serves as a dispersion reference. We show that optical phase modulation provides increased measurement resolution and immunity to optical modulator bias-drift as compared to baseband methods utilizing optical intensity modulation. In addition, we provide a ... |
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| Development of THz Fiber Lasers |
12-Sep-2007 |
8 pages |
| Authors:
Xi-Cheng Zhang; Albert Redo-Sanchez; Gernot S Pomrenke; RENSSELAER POLYTECHNIC INST TROY NY
|
| There is no Current commercially available THz fiber Laser on the market, and there is no any report successful demonstration of THz fiber lasers in literatures. Our DURIP project is to develop a THz fiber Laser on a novel photonic crystal fiber technique. The THz fiber laser has several important characteristics; sm portability, room temperature operation, and high output power. ALL provide advantages over current THz La a new high-power, ... |
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| Laser Noise and its Impact on the Performance of Intensity-Modulation with Direct-Detection Analog Photonic Links |
10 AUG 2007 |
27 pages |
| Authors:
Vincent J. Urick; Preetpaul S. Devgan; Jason D. McKinney; James L. Dexter; NAVAL RESEARCH LAB WASHINGTON DC OPTICAL SCIENCES DIV
|
| The equations for radio-frequency gain, radio-frequency noise figure, compression dynamic range and spurious-free dynamic range are derived for an analog photonic link employing intensity modulation and direct detection. In particular, the impact of laser noise on the performance of an analog photonic link is demonstrated in terms of these metrics. We describe the experimental procedure for measuring laser noise and the measured laser noise spectra of lasers suitable for analog ... |
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| DARPA Quantum Network Testbed |
JUL 2007 |
|
| Authors:
Chip Elliott; Henry Yeh; BBN TECHNOLOGIES CAMBRIDGE MA
|
| BBN has designed and built the world's first Quantum Network testbed, delivering end-to-end network security via high-speed Quantum Key Distribution (QKD), and testing that Network against sophisticated eavesdropping attacks. BBN has fielded this ultrahigh-security network into commercial fiber across the metro Boston area. BBN's QKD network comprises 10 nodes. It is both extremely secure and 100% compatible with today's Internet technology. Four of the 10 nodes are running 24x7 over ... |
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| Developing Pulsed Fiber Lasers |
15 JUN 2007 |
40 pages |
| Authors:
Steven Brueck; Craig Robin; Thomas M. Shay; NEW MEXICO UNIV ALBUQUERQUE CENTER FOR HIGH TECHNOLOGY MATERIALS
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| Laser power is at a premium and a diffraction limited optical beam delivers the maximum intensity on target. Therefore, the better the beam quality, the lower the system cost and complexity is reduced considerably by using high quality beams. Single mode optical fiber lasers and amplifiers produce near diffraction limited beams and therefore will result in near diffraction limited optical beams thus they will provide the highest intensities at the ... |
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| Increased Cross-Correlation in Cascaded Four-Wave Mixing Processes |
11 JUN 2007 |
8 pages |
| Authors:
Jingyun Fan; Alan L. Migdall; L. J. Wang; NATIONAL INST OF STANDARDS AND TECHNOLOGY GAITHERSBURG MD
|
| We report the measurement of increased noise cross-correlation between stokes and anti-stokes beams created in cascaded four-wave mixing processes with dual pump wavelengths. This method may be useful in creating highly correlated twin beams for various applications including quantum information processing. |
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| Terahertz Fiber Laser for Explosives Detection |
JUN 2007 |
12 pages |
| Authors:
Antonije Radojevic; CHARLES STARK DRAPER LAB INC CAMBRIDGE MA
|
| The C.S. Draper Laboratory, with 30 years of experience in instrument and sensor research and development, and the University of Massachusetts Terahertz Laboratory, with 15 years of research in the development terahertz receivers and focal plane arrays, propose to develop and characterize a fundamentally new method for generating terahertz radiation. Our approach will enable the development of a class of high power (>=100 mW), portable, coherent, terahertz radiation source devices ... |
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| New Generation Photonics Materials: Design, Development, Characterization, and Applications |
31 MAR 2007 |
37 pages |
| Authors:
Paras N. Prasad; Guang S. He; STATE UNIV OF NEW YORK AT BUFFALO INST FOR LASERS PHOTONICS AND BIOPHOTONICS
|
| Significant research achievements have been accomplished in development of multi-photon active materials and applications as well as of novel nanocomposites materials for opt-electronic technology. The specific research progress achieved by this grant support can be summarized as follows. (I) Nonlinear optical limiting and stabilization of 1064-nm laser pulses using a novel two-photon absorbing liquid dye salt system. The major advantage of using a neat liquid dye salt as the two-photon ... |
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| A Broadband High Spectral Brightness Fiber Based Two-Photon Source |
19 MAR 2007 |
8 pages |
| Authors:
Jingyun Fan; Alan L. Migdall; NATIONAL INST OF STANDARDS AND TECHNOLOGY GAITHERSBURG MD
|
| After characterizing the Raman scattering in a fused silica polarization-maintaining microstructure optical fiber, we built a fiber-based two-photon light source of high spectral brightness, broad spectral range, and very low noise background at room temperature. The resulting bright low-noise two-photon light can be used for a number of quantum information applications. |
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| Development of a Quantum Repeater for Long-Distance Quantum Communication Using Photonic Information Storage |
14 MAR 2007 |
17 pages |
| Authors:
Mikhail Lukin; PRESIDENT AND FELLOWS OF HARVARD COLL CAMBRIDGE MA OFFICE OF SPONSORED RESEARCH
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| In this project, we have carried out the pioneering work for long-distance quantum communication using atomic ensembles for photon-state storage and for implementation of quantum repeaters. This work was followed by many groups and is now considered as one of the most promising approaches to overcoming photon losses in long-distance quantum communication. Specific highlights include theoretical proposals for quantum repeaters based on atomic ensembles (Nature, 414, 413, 2001), atom-atom correlations ... |
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| Future Directions for Microsystems Technology (BRIEFING CHARTS) |
07-Mar-2007 |
38 pages |
| Authors:
John C Zolper; DEFENSE ADVANCED RESEARCH PROJECTS AGENCY ARLINGTON VA MICROSYSTEMS TECHNOLOGY OFFICE
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| Challenges in Imaging, Sensors, and Signal Processing (BRIEFING CHARTS) |
07-Mar-2007 |
15 pages |
| Authors:
Raymond Balcerak; DEFENSE ADVANCED RESEARCH PROJECTS AGENCY ARLINGTON VA MICROSYSTEMS TECHNOLOGY OFFICE
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| Photonics in Processing (BRIEFING CHARTS) |
06-Mar-2007 |
10 pages |
| Authors:
Jagdeep Shah; DEFENSE ADVANCED RESEARCH PROJECTS AGENCY ARLINGTON VA MICROSYSTEMS TECHNOLOGY OFFICE
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| Adaptive Photonic Phase Locked Elements: An Overview (BRIEFING CHARTS) |
06-Mar-2007 |
16 pages |
| Authors:
Terry A Dorschner; RAYTHEON CO EL SEGUNDO CA NETWORK CENTRIC SYSTEMS
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| Direct Diode Pumped Raman Fiber Amplifier Based on a Multimode Graded Index Fiber |
MAR 2007 |
62 pages |
| Authors:
C. J. Baird; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT/DEPT OF ENGINEERING PHYSICS
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| The direct pumping of a Raman fiber amplifier (RFA) was attempted using an array of four 25W, fiber pigtailed diodes at 936nm, combined via a 7 channel fiber beam combiner. The initial attempt was conducted using a 1.8 km, 100 micron core, GRIN fiber with an NA of .29 and attenuation 3.6 dB/km at 936nm. While amplification was not achieved, over 200mW of conversion was shown, with 10.4W of pump ... |
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| Assured Reference Technology Research (ARTHR) Project. Delivery Order 0004: Fiber-Optic RF Distribution (FORD) (PREPRINT) |
FEB 2007 |
34 pages |
| Authors:
Daniel McLaughlin; Jeffrey Wells; Timothy Wurthh; Daniel Dresher; NORTHROP GRUMMAN SPACE TECHNOLOGY DAYTON OH
|
| The use of fiber optics is considered herein as a means to distribute Radio Frequency (RF) signals across Printed Circuit Boards (PCB). The use of fiber optics is studied with an emphasis on reducing inter-board Electromagnetic Interference (EMI). High performance RF circuits are especially sensitive to EMI and other Radio Frequency Interference (RFI), resulting in poor circuit to circuit isolation, spurious signals, additional filtering requirements, and increased shielding constraints. Fiber-optic ... |
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| 100 Gbit Interconnects and Above: The Need for Speed |
Jan-2007 |
82 pages |
| Authors:
W S Ring; OPTOELECTRONICS INDUSTRY DEVELOPMENT ASSOCIATION WASHINGTON DC
|
| Today's electronic society is seeing increased demand for data transfer, internet downloads, online applications, video sharing, and storage. Banks, companies, universities, and governments require large secure data centers connected to secure networks. This continuously drives the development for more powerful servers and computer systems. Today's data centers are not single computer systems but networked systems with distributed processing, computational power, and memory. The systems are connected by nodes, which connect ... |
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| Silicon Photonics: Challenges and Future |
Jan-2007 |
92 pages |
| Authors:
W S Ring; OPTOELECTRONICS INDUSTRY DEVELOPMENT ASSOCIATION WASHINGTON DC
|
| Several companies and nonprofit organizations within the silicon semiconductor industry have highlighted the technology issues facing copper interconnects for inter-chip, intra-chip, and board-to-board communications. OIDA held a workshop in November 2004 to discuss several of these aspects. Because of the emphasis on silicon photonics today as a potential optical interconnect solution, OIDA held a silicon photonics forum, in conjunction with an interconnect forum, to understand the issues and technology paths ... |
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| Spin-Based Photonics via Electromagnetically Induced Transparency |
NOV 2006 |
4 pages |
| Authors:
Hailin Wang; J. Furdyna; R. Binder; OREGON UNIV EUGENE
|
| Research efforts have focused on the development and implementation of electromagnetically-induced transparency (EIT) from electron spin coherence in a semiconductor quantum well waveguide. Experimental studies have shown an induced transmission resonance arising from the electron spin coherence in the differential transmission spectrum. The induced resonance can be viewed as a signature of EIT from the electron spin coherence. Studies of the polarization and magnetic field dependence further confirm the physical ... |
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| Photonic Band Gap Devices for Commercial Applications |
12 OCT 2006 |
43 pages |
| Authors:
Ahmed Sharkawy; Shouyuan Shi; Caihua Chen; Dennis Prather; EM PHOTONICS INC NEWARK DE
|
| In our effort to develop and demonstrate the design, fabrication, and experimental characterization of functional photonic crystal devices in both 2D and 3D structures, we identified various tasks and goals towards achieving the proposed applications. Two-dimensional photonic crystal structures will be used for in-plane optical signal distribution and routing while three-dimensional structures will be used for out-plane signal distribution, to provide high-density optically interconnected optoelectronic PhC circuits to distribute the ... |
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| Developing and Modeling Fiber Amplifier Arrays |
01 SEP 2006 |
8 pages |
| Authors:
Richard Berdine; NEW MEXICO UNIV REGENTS ALBUQUERQUE
|
| High Energy Lasers (HEL) are required for a number of military applications including missile defense. Electric lasers are considered the laser of choice in the long term since the energy supply is rechargeable and clean. The preferred type of electric laser is the semiconductor diode-pumped solid state laser, which integrates well with other sensors and electro-optical elements in an aerospace, land, or maritime environment. One method for scaling solid state ... |
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| Design, Testing, and Safety Considerations of an Optically Isolated Firing Set |
SEP 2006 |
14 pages |
| Authors:
Mark W. Heyse; Keith A. Jamison; Ronald E. Stearns; AIR FORCE RESEARCH LAB EGLIN AFB FL MUNITIONS DIRECTORATE
|
| Experimental investigations at the Air Force Research Laboratory's Munitions Directorate required a firing set to initiate detonators in ultra-high-voltage experiments, but commercial firing sets with adequate high voltage isolation could not be found. To resolve this issue a Directorate team designed, fabricated a new firing set, verified that it met all design requirements, and obtained safety board approval for its use. The patented design uses all plastic fiber optic cables, ... |
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| Diamond Shaped Ring Laser Characterization, Package Design and Performance |
SEP 2006 |
9 pages |
| Authors:
Rebecca J. Bussjager; Steve Johns; Michael Hayduk; Joseph Osman; Reinhard Erdmann; Brian McKeon; Charles Shick; Nancy Stoffel; Songsheng Tan; Wesley Bacon; AIR FORCE RESEARCH LAB ROME NY SENSORS DIRECTORATE
|
| A semiconductor diamond-shaped ring laser was fabricated and packaged for further test and analysis as an element in digital photonic logic. The optical characteristics of the ring laser were quantified in order to design a prototype package. The mode field was found to be quasi-circular. Based on the mode field of the laser, coupling curves were calculated and Corning OptiFocus(TM) Lensed fiber was chosen to use for the four fiber ... |
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| Fabrications of Photonic Bandgap Structures in Si and Ge Substrates Using Laser-Assisted Nanoimprinting of Self-Assembled Nanoparticles |
SEP 2006 |
32 pages |
| Authors:
Yongfeng Lu; NEBRASKA UNIV LINCOLN DEPT OF ELECTRICAL ENGINEERING
|
| The fabrications of periodic dielectric structures at nanoscales, which are called photonic bandgap (PBG) structures, have attracted the interests of researchers due to the applications in a variety of fields such as optoelectronics, photonics, sensors, photo catalysts, and energy harvesting coatings. One- and two-dimensional PBG structures have been realized because such systems are very amenable to conventional fabrication techniques. However, three-dimensional (3-D) PBG structures are still remained as an important ... |
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| Nonlinear Wave Propagation |
31 AUG 2006 |
137 pages |
| Authors:
Mark J. Ablowitz; COLORADO UNIV AT BOULDER DEPT OF APPLIED MATHEMATICS
|
| The dynamics and properties of mode locked lasers, such as Titanium:sapphire lasers, that produce ultrashort pulses were modeled and comparisons with experiments carried out. An important characteristic of short pulse lasers is the carrier-envelope phase (CEP) slip which is the phase offset between carrier and envelope from pulse to pulse in the pulse train. Control of the phase slip allows researchers to stabilize trains of ultrashort pulses, which are very ... |
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Fiber Optics and Integrated Optics
