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Articles
RF & Microwave Electronics

The Next Generation of Mission-Critical Communications Infrastructure is Here

The critical role of spectrum superiority in the success of battlefield campaigns is evidenced by the enormous investments being made in electronic warfare (EW)...

Briefs
Photonics/Optics

Multimode Optical Fiber Sensing

Although a vast majority of fiber optic strain sensors use single mode fiber, multimode fiber has a higher nonlinear threshold that enables higher light levels and lower noise.

Articles
Sensors/Data Acquisition

Photonic Microwave Generation Using On-Chip Optical Frequency Combs

A key building block of microwave photonics is optical frequency combs, which provide hundreds of equidistant and mutually coherent laser lines.

News
Software

Speeding AV Testing with a Digital Twin

A European company has developed time-saving simulation software for users of the University of Michigan’s Mcity CAV (connected and autonomous vehicle) testing facility in Ann Arbor. It has...

Articles
Aerospace

Ruggedizing Coaxial and Fiber Optic Cable Assemblies from Mechanical Strain

Learn how to protect critical conductors, dielectric, and optical fibers from deforming, cracking, or unraveling

Articles
Photonics/Optics

Understanding Fiber Optic Transceiver Design and Test Rules

The design of avionics systems must balance several factors. First, engineers want to increase the performance of the systems installed in aircraft or spacecraft. Second, they want...

News
Photonics/Optics

The Rodney Dangerfield of Automated-Driving Sensors?

The emerging era of highly-automated driving comes courtesy of much-vaunted sensor technology—spinning lasers, penetrating radar and sonar blips. But the sensor that gets the least...

Articles
Photonics/Optics

Optical Interconnect Design Challenges in Space

More and more aerospace applications are incorporating fiber optics technology into their designs due to its many advantages over copper. The thinner fiber solutions provide higher speed over a...

Articles
Photonics/Optics

Laser-Based System Could Expand Space-to-Ground Communication

A new research project announced recently as a collaboration between the Georgia Institute of Technology and satellite communications provider Xenesis could help open the...

Articles
Sensors/Data Acquisition

Validation of Ubiquitous 2D Radar

Seastema SpA, a company owned by Fincantieri (Genova, Italy), designs, develops, and supplies integrated automation systems for different areas of the marine industry. The company established an Innovation...

Articles
Aerospace

New Technologies Tackle UAV Challenges

Unmanned vehicles for air, land, and water represent an increasingly-important capability for virtually all military services worldwide. Because each new generation of device technology promises...

Articles
Imaging

Communications in Space: A Deep Subject

Transmitting and receiving radio signals between spacecraft in deep space is a snap compared with getting those signals back to Earth, especially when the spacecraft is 120 billion miles away.

Articles
Photonics/Optics

Identifying and Isolating Signals Using Radio Frequency Photonics

A single antenna can be used for both transmission and reception. To accomplish this, the transmission must be isolated from the reception. In Figure 1, a radio frequency...

Briefs
Photonics/Optics

Laser Integration on Silicon Photonic Circuits Through Transfer Printing

The purpose of this project was to develop a transfer printing process for the massively parallel integration of III-V lasers on silicon photonic integrated circuits....

Articles
Aerospace

Flat Cable Technology for Aerospace Applications

There are those who think all cables are created equal. Well, they're not.

Articles
Aerospace

EMI Analysis Software Helps Telescope Group Simulate RFI Mitigation

Challenging Einstein’s seminal theory of relativity to the limits, how the very first stars and galaxies formed just after the Big Bang, the study of dark energy and the...

Articles
Defense

Achieving Performance Advantages in Unmanned Systems

Unmanned Vehicle Systems (UVS) are reaching new levels of functionality and performance, and it’s not just for air vehicles either. Ground and underwater UVS programs are all taking...

Articles
Aerospace

COTS Embedded Systems and Link Budgets

The days of proprietary embedded computing systems in military systems are numbered. Proprietary systems, with the attendant vendor lock-in, tend to be platform specific, increasing the development and...

Briefs
Manufacturing & Prototyping

Silicon Microsphere Fabrication

The efficiency and methodology of coupling light into microcavities has improved exponentially in the last decade. One such advancement is coupling light onto silicon microspheres. The material, size, and...

Articles
Photonics/Optics

RF Photonics for Avionics Signal Processing

The maturity of RF photonic components has reached the point where fiber optic links are being system-tested to replace traditional copper coax links on avionic platforms. Many demonstrations of RF...

Briefs
Physical Sciences

Automatic-Alignment Fiber Optic Coupling System for Optimal Signal Transmission

Using the current method of characterizing waveguides manufactured for research in optical communications, it can take up to 8 hours to characterize the...

Articles
Defense

Small Form Factor Strategies for Military Embedded Systems

The proliferation of unmanned military vehicles tasked with critical communications and radar requirements drives the need for powerful data acquisition and signal processing...

Articles
Aerospace

Free Space Optical Communications System for Advancing Superiority on the Battlefield

Fixed and tactical information networking, especially for defense applications, has begun to require increasing data transmission capacity as the...

Articles
Photonics/Optics

Beam Irradiance on Target System (BITS)

The Beam Irradiance on Target System (BITS) is a high energy laser (HEL) sensor array that directly measures the beam irradiance profile of HEL weapons. The BITS is a sensor array composed of 105...

Briefs
Physical Sciences

Distributed Fiber Optic Sensing for Homeland Security

To address the need to protect our borders and critical infrastructure, fiber optic sensing technology developed for antisubmarine warfare applications has been adapted to homeland...

Briefs
Materials

Rare-Earth-Doped Soft Glass Optical Fibers for Coherent Wavelength Sources Above 2 Microns

Rare-earth-doped soft glass optical fibers were developed and characterized for fiber lasers emitting at wavelengths longer than 2 microns to allow...

Articles
Aerospace

Fiber Optic Gyroscope Technology Improving Weapons Systems Performance

Autonomous vehicles require gyroscopes for navigation and stabilization of the platform in demanding battlefield, aerospace and undersea environments. Autonomous vehicles...

Briefs
Photonics/Optics

Novel Wavelength Standards in the Near Infrared

The goal of this work was to develop a new class of portable optical frequency references based on sub-Doppler spectroscopy inside gas-filled, hollow-core photonic bandgap (PBG) optical fiber. The change in line width with core size, and narrower transitions inside a new “kagome” structured...

Briefs
Photonics/Optics

Design and Development of a Package for a Diluted Waveguide Electro-Absorption Modulator

Externally coupled electroabsorption modulators (EAMs) are commonly used in order to transmit RF signals on optical fibers. Recently, an alternative...