The present method of detecting wideband pulsed and continuous wave (CW) electromagnetic fields utilizes asymptotic conical dipole devices. Because of the metallic nature of this device, the electromagnetic fields are perturbed and lead to inaccurate measurements. In addition, since this is a D-dot… More

An innovative integrated optical Mach-Zehnder interferometer voltage sensor is proposed for fabrication in a lithium niobate substrate. The novel feature of this sensor is that one leg of the interferometer is reverse poled by selective ferroelectric domain inversion techniques. This feature permits… More

This proposal addresses a design for measurement of high voltages at high frequency without the sensitivity, bandwidth and measurement time limitations encountered in currently available thermal converter components or diode detectors. SRICO proposes to develop a prototype RF Voltage Measurement… More

SRICO proposes the development of a wide bandwidth fiber optic microwave transmission system that can operate over the frequency range of 10 kHz to 20 GHz. This is a wideband fiber optic microwave transmission system that can accurately transfer microwave signals produced by electric field… More

Increasingly, fiber optic links are being extended into the K-Band frequency regime and beyond for communications and signal processing applications. Higher operating frequencies put stringent demands upon the RC time-constants of photodetectors and receiving electronics. High bandwidth demands… More

Increasingly, fiber optic links are being extended into the K-Band frequency regime and beyond for communications and signal processing applications. Higher operating frequencies put stringent demands upon the RC time-constants of photodetectors and receiving electronics. High bandwidth demands… More

This proposal addresses the development of a non-invasive, non-contact optical electrode (optrode) for rapidly determining a person's vital signs at or near the scenes of battlefield trauma. In particular, a sensor is proposed that uses fiber optic and integrated optic technologies for rapid… More

This proposal addresses the development of a dry, high-impedance electrode for physiological monitoring in operational environments. In particular, a device is proposed that uses optical fiber based voltage sensing technology to provide an optoelectronic interface to standard electrical recording… More

Not Available It is now widely-accepted that the knowledge of boundary-layer transition onset is crucial for the prediction of aerodynamic performance of high-lift systems using Computational Fluid Dynamics (CFD) methods. Currently, no CFD code has a built-in reliable

Not Available The project objective is to create a unified process management system for computational fluid dynamics (CFD) codes using the NASA flow solver PAB3D as the prototype solver. Initially a basic system will be created to tie together the existing PAB3D syste

There is a need for small, lightweight, low-power sensors for real time, unobtrusive monitoring of the physiologic status of individuals in military and civilian environments. Studies show that sleep deprivation can dramatically reduce performance. Forexample, monitoring the electroencephalogram… More

The Army's Warfighter Physiological Status Monitoring (WPSM) and the Land Warrior Medic programs will provide Commanders with health and performance information regarding the readiness status of their troops. This proposal offers a novel optical approachto monitor the alertness level of a soldier… More

"This proposal describes an all-optical 32x32 low-loss cross-connect switch based on periodically-poled gratings in an electro-optic waveguide substrate. The gratings are arranged between parallel waveguide channels and serve to produce coupling of thedesired wavelength from a given input channel to… More

This Small Business Innovation Research (SBIR)Phase I proposal is directed at the fabrication of photonic band gap structures in lithium niobate optical waveguide substrate. Lithium niobate, with well-understood material properties, is currently the preferred material for electro-optic modulators… More

This STTR proposal addresses the development of novel guided wave devices that use photonic band gap technology in epitaxial thin-film ferroelectric barium titanate. This proposed project combines the advanced ferroelectric materials technology developedat Northwestern University with the photonic… More

For a couple of decades, congruent lithium niobate (CLN) has been the choice electro-optic material for integrated optic modulators and switches. Despite the development of new substrates, such as electro-optic polymers and compound semiconductors,lithium niobate is still the preferred material for… More

There is a need to improve the sensitivity of chemical and biological sensing LIDAR systems so that standoff distances can be increased. LIDAR sensing systems have to cover ranges of 50 m to 20 km. However, their sensitivity is limited by the need to keep the laser transmitter power below the… More

Laser Detection and Ranging (LADAR) scene simulators are an important tool for characterizing the LADAR systems used by missiles and aircraft. The scene simulator is used for incremental and final testing of the embedded hardware and software that enable real-time operation of the LADAR system. An… More

Scene Projectors enable improvements in the design and testing of LADAR systems, including full "hardware in the loop" testing, and require a large number of pixels whose intensity can be rapidly varied over an optical dynamic range exceeding 62 dB. Typically, such Scene Projectors may consist of a… More

Real-time monitoring of the physiological state of pilots flying high performance tactical aircraft would offer significant benefits to the prediction and detection of gravity-induced loss of consciousness (GLOC) and almost loss of consciousness (ALOC) and thus help prevent aviation mishaps and loss… More

This proposal addresses the development of novel ferroelectric relaxors, such as PMN-PT, to produce a new class of ultra-high sensitivity, non-intrusive, compact electro-optical electric field probes for frequencies up to and beyond 100GHz. This material is capable of demonstrating an electro-optic… More

This proposal addresses the development of novel ferroelectric relaxors, such as PMN-PT, to produce a new class of ultra-high sensitivity, non-intrusive, compact electro-optical electric field probes. This material is capable of demonstrating an electro-optic coefficient that is more than an order… More

Terahertz radiation occupies a largely unexploited band from 100 GHz radio frequency to 30 THz infrared. It is capable of penetrating fog and moderate density objects such as wood and fabric at substantially higher resolutions and shorter ranges than radar. THz imaging can be used to screen… More

This SBIR technology transfer program offers the opportunity to produce a new generation of advanced large area and monolithic pryoelectric detector arrays that fully exploit the benefits of domain engineering and "smart-cut" technologies. SRICO will Investigate domain-engineering patterns to reduce… More

In the past twenty-five years, electro-optic modulator technology has made significant advances in terms of performance. Modulator bandwidth, a key technical parameter, has been extended to 40 gigahertz in the commercial world and to 100 gigahertz and beyond in research laboratories. The greatest… More

This Small Business Technology Transfer Phase I research project incorporates the emerging Smart-Cut technology to produce large optical index contrast lithium niobate waveguides on silicon substrates. Nonlinear optical operations that previously required optical switching power in the kilowatt… More

This Small Business Innovation Research Phase II project uses the ¿smart-cut¿ methods to produce high performance and advanced functionality lithium tantalate pyroelectric sensors. Phase I has been devoted to feasibility demonstration of the ¿smart-cut¿ process, preliminary design… More

This Small Business Innovation Research Phase II project addresses the need for compact and efficient detectors in the terahertz spectrum. Terahertz radiation is capable of penetrating fog and moderate density objects such as composites, wood and fabric at substantially higher resolutions and… More

This Small Business Innovation Research Phase I project develops novel materials processing and device design that extract the maximum possible performance out of the lithium niobate electro-optic material. For microwave analog fiber optic links, such as for antenna remoting and RF filtering… More

Presently, there is a specific need for portable RF field strength meters for testing over the intensity range of a few hundred volts per meter to several million volts per meter and up to a frequency of 100 GHz to ensure personnel safety. To address these wide dynamic range and high frequency… More

This Small Business Innovation Research Phase II project develops novel materials processing and device design that extract the maximum possible performance out of the lithium niobate electro-optic material. The novel modulator device incorporates reconfigurable quasi-phase matching (RQPM) to… More

This Small Business Innovation Research Phase II project exploits the emerging technologies of wafer bonding and ion slicing, referred to as"smart-cut"to substantially improve the performance capability of lithium niobate based electro-optic modulators. The greatest problem has been to… More

The goal of this effort is to design, fabricate and test prototype electric field sensors at government laboratories. The effort is multidisciplinary and requires varying levels of expertise in diverse and rapidly advancing technologies including materials science, photonic-device design and… More

Mercury Cadmium Telluride (MCT) has been described as one of the most technologically significant semiconductor materials and is the most widely used material for long wave infrared (LWIR) imaging. The current challenge is to produce MCT over large focal plane array size at low cost and high… More

High energy X-ray pulse sources used in nuclear weapons effects (NWE) tests can produce electromagnetic pulses through system generated electromagnetic pulse (SGEMP) effects. Improved diagnostics for NWE experiments is motivated by the need to accurately measure the test environment and to model the… More

Recent broadband analog photonic link performance improvements have renewed the interest and activity in developing microwave photonics for broadband radio frequency (RF) signal transmission and signal processing. Increased bandwidths and reduced fiber optic link insertion loss/noise figure… More

The goal of this STTR project is to develop an engineered growth substrate technology that will enable low defect MCT growth on silicon that is comparable in defect density to MCT grown on lattice matched CZT substrates. The layer transfer process elements demonstrated in Phase I will be further… More