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Photonics

Optical storage disc as Data storage technology is making combeback

There were 79 zettabytes of data generated worldwide in 2021. By 2025, more than 150 zettabytes of big data will need analysis. Dramatic increases in data storage capacities are urgently needed as they are being outpaced by exponential growth in data generation, driven by use of the internet, social media, …

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Photonics Masts are critical subsystems of Submarine imaging, navigation, electronic warfare and communications system

A submarine is a naval platform that can stay underwater for an extended period to carry out missions, both offensive and defensive. It is a complex platform that includes multiple components. As radio waves cannot propagate in water, communication with submarines is difficult. To overcome this issue, submarines are being …

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Facial recognition widely employed in commercial, Security and Military applications

Facial recognition is a way of using software to determine the similarity between two face images in order to evaluate a claim. The technology is used for a variety of purposes, from signing a user into their phone to searching for a particular person in a database of photos.   …

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Quantum dots, the semiconducting nanocrystals enable efficient & cheaper displays, solar cells, and infrared cameras

Driven by technology advances in solid-state optoelectronics, light-emitting diode (LED) lighting has been expanded to a wide range of applications in consumer electronics, automotive, architectural, and healthcare settings. Recently, there has been a drive to make lighting “smart” by incorporating internet of things (IoT) connectivity and machine learning-based artificial intelligence …

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Nonlinear photonics or optics key enabling technology for imaging, high-speed data communication and optical computing

Nonlinear optics is a part of optics, dealing with various kinds of optical nonlinearities e.g. in nonlinear crystal materials (including both dielectrics and semiconductors) or in optical fibers and other waveguide devices. Nonlinear effects with light are those where e.g. twice the optical input intensities does not simply result in …

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Optical or Photonic switches are key devices for meeting data traffic growth in optical networks and data centres

Switches are important components of any communications network. Switches are found inside network-connected devices and used to change data transmission paths when transmitting data between devices. By quickly changing the transmission pathway and sending data only to relevant devices, the total load on the network can be reduced.   Optical …

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Non-Linear Optical Materials and Applications

Nonlinear optical (NLO) materials have long been known to interact with light, to produce a nonlinear response. Nonlinear optical materials use nonlinear dependence of the refraction index on the applied electric field to produce other frequencies. This results in either harmonic generation or frequency shifting. The development of the field was …

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DARPA MuS2 developing Muon Source to detect shielded nuclear contraband, to objects deeply buried up to thousands of meters below the earth’s surface

Muons are subatomic particles that behave a lot like electrons but are around 200 times heavier. As the US Department of Energy explains, “Muons created in the atmosphere constantly hit every inch of the Earth’s surface and pass through almost any substance.”   Many scientists have noted that measuring the …

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DARPA developed Battlefield Illusion for deception Electro-Optical Warfare

Magicians and generals have had a long-standing relationship – one that produced very real effects during wartime. Harry Houdini snooped on the German and the Russian militaries for Scotland Yard. English illusionist Jasper Maskelyne is reported to have created dummy submarines and fake tanks to distract Rommel’s army during World …

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Optical and Laser Illusions

Optical illusions (or visual illusions) are tricks that your mind plays on you based on what you think you are seeing. The image that is being visually perceived is deceptive and does not tally with actual reality. So what you are seeing and what comes out after being processed by the …

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