With the strength of the light of the optical fiber transmission are mainly affected by the glass itself. A new type of optical fiber is designed with hollow, full of the atmosphere, the kernel removes the limitation, and by forcing the light along the atmospheric channel movement and greatly improved the performance. DARPA has only like cobwebs, hollow fiber design single model is verified for the first time, low loss and polarization control, advanced key attributes needed for military applications, such as high precision fiber optic gyro inertial navigation.

Although overseas suppliers hollow optical fiber has been used for many years, but the DARPA is carried out to provide an absolute reference small overstable gyroscope (so-called COUGAR) project has introduced the design and production capacity, to the United States and developed more than the current technological level of products.

An army of DARPA ?