PHOTONICS
Defintion:
Photonics is the science and technology of generating, controlling, and detecting photons, particularly in the visible light and near infra-red spectrum. Photonics as a science is closely related to quantum optics and optoelectronics with somewhat unclear boundaries. "Quantum optics" often means fundamental research, and "photonics" often means more application-related research. The term "optoelectronics" by construction means a somewhat narrower field than photonics, dealing only with active elements involving an electrical interaction, but often includes parts of passive photonics as well. Also, the overlap between all these fields and "optics" is unclear, and different definitions are used in different parts of the world and in different industries.
The term photonics sometimes, but not always, implies a goal of establishing an electronics of photons instead of electrons.
Polaritonics differs with photonics in that the fundamental information carrier is a phonon-polariton, which is a mixture of photons and phonons, and operates in the range of frequencies from 300 gigahertz to approximately 10 terahertz. Photonics typically operates at frequencies on the order of hundreds of terahertz.
The field of photonics has a strong interest in optical communication. The science and applications of photonics are usually based on laser light.
The term photonics sometimes, but not always, implies a goal of establishing an electronics of photons instead of electrons.
Polaritonics differs with photonics in that the fundamental information carrier is a phonon-polariton, which is a mixture of photons and phonons, and operates in the range of frequencies from 300 gigahertz to approximately 10 terahertz. Photonics typically operates at frequencies on the order of hundreds of terahertz.
The field of photonics has a strong interest in optical communication. The science and applications of photonics are usually based on laser light.
posted by ch0yaks @ 9:16 PM
0 comments
