Single vs multi mode fiber

A fiber-optic cable, also known as an optical-fiber cable, is a cable that is one or more optical fibers that are used to carry light. The optical fiber elements (typically made of glass) are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable is used.

Laser and light communications news

Light communications is hot in news now. Here are few headlines: LiFi 802.11bb standard uses light for in-room data transmission up to 224GB/s https://www.cnx-software.com/2023/07/14/lifi-802-11bb-wifi-standard-uses-light-for-in-room-data-transmission-up-to-224gb-s/ The 802.11bb WiFi-like standard, also called LiFi, was ratified in June 2023. It enables data transmission up to 224GB/s at a few meters range within a room using light instead of

800G Ethernet specification

The 25 Gigabit Ethernet Consortium has decided to ditch its name as it heads off in search of serious speed with 800G specification. To mark the new name, the group has published 800G specification [PDF] that details its next step in Ethernet’s evolution. Ethernet standards group leaves its name in the dust as it details

Bidirectional optical device

Traditionally, an optical communication system would require two components at each end: transmitter and receiver. It has been known that LEDs can act as photo sensors, but they have not been very practical for optical communications applications. Researchers have now shown switching between LED and photodetector modes on new type component quickly enough for real-time

Light and optics science news

Here are some interesting science news: New property of light discovered https://phys.org/news/2019-06-property.html A team of researchers affiliated with several institutions in Spain and the U.S. has announced that they have discovered a new property of light—self-torque. Goodbye Aberration: Physicist Solves 2,000-Year-Old Optical Problem https://petapixel.com/2019/07/05/goodbye-aberration-physicist-solves-2000-year-old-optical-problem/ “In this equation we describe how the shape of the second

To Crack the Toughest Optimization Problems, Just Add Lasers – IEEE Spectrum

https://spectrum.ieee.org/computing/hardware/to-crack-the-toughest-optimization-problems-just-add-lasers Optimization is very important but is usually computationally very hard. Optimization encompasses far more than the traveling salesman problem. Scheduling is another difficult optimization challenge. Given the fact that the era of steady, large improvements in computer-processor performance appears to be coming to a close, researchers have begun to explore machines specially designed for

This 3D-printed AI construct analyzes by bending light | TechCrunch

https://techcrunch.com/2018/07/26/this-3d-printed-ai-construct-analyzes-by-bending-light/ Machine learning systems, which we frequently refer to as a form of artificial intelligence, at their heart are just a series of calculations made on a set of data. The calculations themselves aren’t particularly complex. Researchers from UCLA show that those calculations can be implemented optically with 3D-printed layers of transparent material, imprinted with

uCameraCube – Hackster.io

https://www.hackster.io/delmans/ucameracube-c64263 Need for a custom camera module. Check out this intetesting looking project. uCameraCube is a parametric camera module build using OpenSCAD uCube library. It is build with Raspberry Pi and Raspberry Pi camera and comes in three versions, which vary in the type of optics used. Thin Lens version M12 Lens version T-Mount version