Publication

Optics in 2021 & Beyond

Luc Thévenaz
2020
Media

Abstract

2021 will likely witness the advent of low loss hollow-core optical fibers outperforming the classical solid core fibers. This will be a revolutionary breakthrough, primarily for longer distance telecommunications with drastically reduced distortions and cross-talks for a higher density of information, but also for distributed fiber sensing that may enter into a new dimension by exploiting the huge flexibility of a customizable gaseous medium.

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Luc Thévenaz
2020
Media

Abstract

Official source

Related concepts (5)

Power density

Power density is the amount of power (time rate of energy transfer) per unit volume. In energy transformers including batteries, fuel cells, motors, power supply units etc., power density refers to a volume, where it is often called volume power density, expressed as W/m3. In reciprocating internal combustion engines, power density (power per swept volume or brake horsepower per cubic centimeter) is an important metric, based on the internal capacity of the engine, not its external size.

Energy density

In physics, energy density is the amount of energy stored in a given system or region of space per unit volume. It is sometimes confused with energy per unit mass which is properly called specific energy or . Often only the useful or extractable energy is measured, which is to say that inaccessible energy (such as rest mass energy) is ignored. In cosmological and other general relativistic contexts, however, the energy densities considered are those that correspond to the elements of the stress-energy tensor and therefore do include mass energy as well as energy densities associated with pressure.

Optical fiber

An optical fiber, or optical fibre in Commonwealth English, is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair. Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data transfer rates) than electrical cables.