Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Military Space News .




MILTECH
Novel Hollow-Core Optical Fiber to Enable High-Power Military Sensors
by Staff Writers
Washington DC (SPX) Jul 19, 2013


Hollow-core fiber assembly, image courtesy of OFS.

The intensity of light that propagates through glass optical fiber is fundamentally limited by the glass itself. A novel fiber design using a hollow, air-filled core removes this limitation and dramatically improves performance by forcing light to travel through channels of air, instead of the glass around it.

DARPA's unique spider-web-like, hollow-core fiber, design is the first to demonstrate single-spatial-mode, low-loss and polarization control-key properties needed for advanced military applications such as high-precision fiber optic gyroscopes for inertial navigation.

Although hollow-core fiber has been available from overseas suppliers for years, DARPA's ongoing Compact Ultra-Stable Gyro for Absolute Reference (COUGAR) program has brought design and production capacity inside the United States and developed it to a level that exceeds the state of the art.

A team of DARPA-funded researchers led by Honeywell International Inc. developed the technology. The hollow-core fiber is the first to include three critical performance-enabling properties:

+ Single-spatial-mode: light can take only a single path, enabling higher bandwidth over longer distances;

+ Low-loss: light maintains intensity over longer distances;

+ Polarization control: the orientation of the light waves is fixed in the fiber, which is necessary for applications such as sensing, interferometry and secure communications.

Hollow-core fiber can also be bent and coiled while guiding light at speeds 30 percent faster than conventional fiber.

"Previous instantiations of hollow-core fiber have shown these high propagation speeds, but they weren't able to do so in combination with the properties that make it useful for military applications," said Josh Conway, DARPA program manager. "The real breakthrough with COUGAR fiber is that it can achieve a single-spatial-mode, maintain polarization and provide low loss, all while keeping more than 99 percent of the optical beam in the air."

DARPA began COUGAR to enhance fiber optic performance for military-grade gyroscopes and to develop a world-class, hollow-core fiber production capability in the United States.

"While we are still working on integrating this new technology into a gyroscope, the fiber itself is revolutionary," added Conway. "This type of technology may also lend itself to other types of high-power sensors and additional applications where intense optical beams are required. Hollow-core fiber is also naturally radiation hardened, so it may open up fiber applications to space systems."

.


Related Links
CompactUltra-Stable Gyro for Absolute Reference (COUGAR)
The latest in Military Technology for the 21st century at SpaceWar.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





MILTECH
Raytheon's advanced uncooled thermal technology preferred by international land forces
McKinney TX (SPX) Jul 18, 2013
A recent international contract brings Raytheon awards for uncooled thermal systems for allied countries to more than $75 million over the last 12 months. Under the contracts, Raytheon will deliver PhantomIRxr bioculars, thermal weapon sights and driver's vision enhancer (DVE) systems. "Raytheon's uncooled thermal systems give forces a clear advantage: Operating in complete darkness enable ... read more


MILTECH
Early hardware delivery enables deployment of crucial missile defense radar

Israel deploys Iron Dome near Red Sea resort of Eilat

Missile plan to go ahead despite test failure: US

US missile defense test fails: Pentagon

MILTECH
Raytheon demonstrates high-definition, two-color Third Generation FLIR System

Raytheon, Chemring Group plan live missile firing for next phase of CENTURION development

Panama says suspected missile material found on N. Korea ship

Lockheed Martin Completes Captive Carry Tests with LRASM

MILTECH
First Upgraded MQ-8C Fire Scout Delivered to U.S. Navy

US drone strike kills two militants in Pakistan

Northrop Grumman, U.S. Navy Complete First Arrested Landing of a Tailless Unmanned Aircraft Aboard an Aircraft Carrier

US drone lands on carrier deck in historic flight

MILTECH
US Navy Poised to Launch Lockheed Martin-Built Secure Communications Satellite for Mobile Users

Northrop Grumman Moves New B-2 Satellite Communications Concept to the High Ground

Canada links up on secure U.S. military telecoms network

Lockheed Martin-Built MUOS Satellite Encapsulated In Launch Vehicle Payload Fairing

MILTECH
Novel Hollow-Core Optical Fiber to Enable High-Power Military Sensors

US jets drop unarmed bombs on Australia's Great Barrier Reef

Northrop Grumman Awarded Contract for LITENING Targeting System Sustainment

Raytheon's advanced uncooled thermal technology preferred by international land forces

MILTECH
Rheinmetall, MAN announce military deal in Australia

Israeli defense industry exports under scrutiny

EU to unveil plans to integrate defence industry

Britain exporting arms to rights violators: lawmakers

MILTECH
China's Li says 7% 'bottom line' for growth: report

Commentary: Flat broke superpower

Airport bomb exposes public anger at China abuse

India, China officials hold border talks after stand-off

MILTECH
Desktop printing at the nano level

New nanoscale imaging method finds application in plasmonics

York Nanocentre researchers image individual atoms in a living catalytic reaction

NASA Engineer Achieves Another Milestone in Emerging Nanotechnology




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement