Photonics

A U.S.-developed space surveillance telescope has been assembled at a new facility in Western Australia and is expected to start operating in 2022, the U.S. Space Force Space and Missile Systems Center announced April 2020. The telescope, designed to track and identify debris and satellites more than 22,000 miles above Earth, …

Free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking. “Free space” means air, outer space, vacuum, or something similar. FSO operates on the Line-of-Sight phenomenon, consisting of a LASER at source and detector at …

Michelson proposed an interferometric apparatus in 1890 following an earlier suggestion by Fizeau. The invention became the precursor of many important modern optic measurement techniques. The Michelson Interferometer, as it is called, is used to measure small optical path length changes. The classic Michelson Interferometer consists of two mirrors (one forming …

The fiber optic sensors also called as optical fiber sensors use optical fiber or sensing element.  These Sensors can measure a large variety of parameters, such as temperature, pressure, strain, refractive index, vibrations, displacements, bending, loading, and liquid level or concentration of chemical species. Fiber optic sensors have become a …

The need for better radar in World War II drove the development of radio frequency control, and its miniaturization in subsequent decades revolutionized a host of military and consumer applications. The generation of accurate signal frequencies from a single reference oscillator called microwave frequency synthesis, brought about many advanced technologies …

Photonics is the physical science of light (photon) generation, detection, and manipulation through emission, transmission, modulation, signal processing, switching, amplification, and sensing. Though covering all light’s technical applications over the whole spectrum, most photonic applications are in the range of visible and near-infrared light.   Photonic systems provide many desirable …

The goal of future generation networks is to meet the future communication needs of the information societies such as Smart infrastructures, Smart City, Smart Grid, Smart Health, and Smart Transportation. The future will be a completely data-driven society in which people and things are connected universally, almost instantaneously (milliseconds) to …

Laser weapons use high power lasers to  damage or destroy adversary equipment, facilities, and personnel. The technology provides major advantages for military applications due to High precision and rapid on-target effect, precise and scalable effects, Avoidance of collateral damage caused by fragmenting ammunition, Low logistics overhead and minimum costs per …

Pilots rely more on vision than on any other sense to orient  themselves in flight. The visual sense is especially important in collision avoidance and depth perception. A pilot’s vision sensors are the eyes generally are most accurate and reliable sense, even though they are not perfect in the way …

It is predicted that LEDs will be the ultimate light source in the near future powering indoor illumination, outdoor lamps, traffic signs, advertising displays, car headlights/taillights, etc. Now another technique  promises to double the utility of light-emitting diodes (LEDs) by using their light as a medium for communication in a …