Category Comm. & Networking

Optical Amplifiers

The transmission loss of the light passing through the optical fiber is a very small value of less than 0.2 dB per km with a light wavelength in the 1,550 nm band. Therefore clearest optical fibers can transmit signals more…

DARPA Ouija employing very low- Earth orbit (VLEO) satellite sensors to predict military high-frequency (HF) radio communications

Whether in the field of battle, search-and-rescue or humanitarian aid efforts, the ability to share real-time, networked information between ground, sea and airborne forces is rapidly becoming the defining factor in a mission’s success. However modern  satellite and other  communications…