Award Data

ABSTRACT: For this SBIR topic, we have proposed a novel high-power optical fiber pump combiner design that addresses the specific challenges associated with counter-pumping large-mode-area (LMA) double-clad gain fibers. Based on modeling and design optimization, we will fabricate kilowatt capable power combiner prototypes for pump coupling to double-clad Yb-doped polarization-maintaining (PM) fi ...

ABSTRACT: In response to the U.S. Air Force"s need for fiber cooling and pointing in high power fiber amplifiers of 1kW and up, i2C Solutions propose the development of a conformal thermal ground plane (TGP) technology to interface with heat sinks integrated into the active precision pointing fiber support structure. The result is a highly efficient thermal management solution, with respect to b ...

ABSTRACT: This proposal addresses an important need of DoD and MILSATCOM for satellite based receivers operating at Ka-Band having multiple beams (as many as 30) capability. Many of these beams need to be independently steered. This has traditionally been a major challenge because, as will be shown, the architectures that are required are very component intensive, which has made such antenna sys ...

ABSTRACT: The Etched Air Taper Combiner as fist proposed by the US Air Force Academy has the advantages in that the input fiber bundle, the combining section, and the output to the gain fiber can be individually improved and optimized and then the components are spliced together to create the finished device. Pump efficiencies of over 96% and power handling capabilities of 1.5kW have been demons ...

ABSTRACT: Nutronics, Inc. proposes to develop a detailed conceptual design for a general purpose, rugged, compact and lightweight beam director design for high energy laser phased array weapon systems. Our expertise in target based phase measurement approaches provides us with a unique insight into the basic requirements of both the subaperture for a phased array weapon system beam director and ...

ABSTRACT: The DoD requires accurate real-time knowledge of ionospheric variability in order to reduce one of the biggest error sources inherent in the use of critical systems such as Over the Horizon Radar (OTHR). OTHR is particularly susceptible to traveling ionospheric disturbances (TID"s) which are underspecified by current methods. Consequently, OTHR target location errors can reach 10s-100 k ...

ABSTRACT: The biggest demand on a military receiver has been from the time required to search and acquire for the military signals when an accurate internal time reference is not available. Prior research by NAVSYS into network assisted GPS approaches used the JTRS network itself to transfer time from another GPS receiver to reduce the initial time uncertainty and speed the acquisition time. This ...

ABSTRACT: Future SATCOM payload antennas need to provide much greater spot beam control flexibility. Currently deployed systems utilize phased array fed dishes limiting the number of spot beams and gain since earth coverage is accomplished by limiting the number of beamwidths scanned. The solution proposed is a direct illumination phased array that is scaleable for very high gain. Greater than 30 ...

ABSTRACT: The Air Force requires accurate knowledge of the ionospheric environment in order to mitigate ionospheric impacts on vital radio-based systems, including communications, navigation, and surveillance systems. Current DoD capability for the specification and forecasting of the ionosphere relies heavily on GPS measurements of ionospheric total electron content (TEC). Currently TEC data is ...

ABSTRACT: In this SBIR effort we will develop a packaging process and demonstrate (Phase I) a prototype of high power Photodiode (PD) that has a normal incident, pigtailed fiber input and a coaxial RF output that operates from DC to>60GHz. We will apply and extend (Phase II) the aforementioned packaging process to single PD, balanced PD and array of PDs that work from DC through entire W-band. De ...