Award Data

This NASA Phase I STTR effort will establish the feasibility of developing a compact broadband near to mid-IR programmable optical comb for use in laser based remote sensing and communications. The comb generator will use a waveguide-based optical parametric gain block technology that can have ultra wideband (>250nm) operation with very high gain (>25dB) in a very compact footprint. This approach ...

AdvR, Inc. proposes the development of an efficient process for fabricating ridge waveguides in magnesium-doped lithium niobate (MgO:LN). The effort will include, but will not be limited to, fabricating ridge waveguides in periodically poled MgO:LN for highly efficient, single-pass, quasi phase-matched frequency conversion. Ridge waveguides in MgO:LN will significantly improve the performance (p ...

A radiation hardened via-configurable analog array (RHVCAA) is proposed to provide a rapid prototyping mixed signal platform for implementing radiation hardened and high performance custom analog system designs. In phase I the feasibility of implementing RHVCAAs was investigated. Existing Triad semiconductor VCAA technology was assessed to determine modifications required to comply with radiation ...

The UCDS process uses a rigorous theoretical model to understand the dynamics of combustion instability. In addition to predicting the amplitude of pressure oscillations, UCDS provides clear insight into why a propulsion device oscillates. To enhance and optimize UCDS for missile defense applications, GTL proposes to refine the UCDS unsteady combustion model to capture the special features of mon ...

Abstract There is a valid scientific data paradigm where no loss of data can be tolerated. However, transmission of raw data requires unacceptable bandwidth and storage resources such that the net data received is uncomfortably low. Lossless data compression can be used to preserve all data with no information loss and also help meet bandwidth and storage constraints. The current Universal Sou ...

This program will utilize in-situ monitoring devices during the HVPE growth of GaN in conjunction with thermal and gas flow modeling, to establish tighter tolerances over growth variables such as substrate temperature and growth rate, which will lead to more robust, producible HVPE GaN growth processes, and in turn increase large area wafer yield and boule thicknesses. The in-situ monitoring dev ...

We aim to build and demonstrate an innovative photonic true time delay solution which alleviates the fundamental problem of cascaded optical switches, and additionally offers several significant benefits. The device uses wideband spatial-spectral (S2) holographic optical memory materials to store and access several broadband time delay gratings. Broadband optical chirps are used to create these ti ...

DESCRIPTION (provided by applicant): Freezing of Gait (FOG) effects the majority of the approximately one million individuals who have Parkinson's disease nationwide and causes a cessation of movement that patients describe as feeling as if their feet are glued to the ground . FOG most often occurs in the mature stages of Parkinson's disease and results in a loss of balance and severe falls. Thes ...

DESCRIPTION (provided by applicant): The NF-?B family of transcription factors plays a central role in the regulation of lymphocyte proliferation, differentiation and survival. Aberrant constitutive activation of NF-?B has been identified in many different aggressive lymphoid malignancies in humans and contributes to lymphomagenesis and chemotherapeutic resistance by driving the expression of NF-? ...

DESCRIPTION (provided by applicant): Islet transplantation (ITx), especially with the emerging potential of xenotransplantation, holds significant promise for the treatment of type 1 diabetes (T1D). There are, however, major challenges that remain prior to its larger scale, cost-effective application. Hypoxia is a leading stress post-transplantation and is estimated to cause the death of approxima ...