Information on optical fiber?

Can u give me informations on optical fiber in medicine?
Answers:
Photonics is the science and technology of generating, controlling and detecting photons, particularly in the visible and near infra-red spectrum. Photonics as a science is closely related to quantum optics and optoelectronics with somewhat unclear boundaries. Quantum optics frequently implies fundamental research, while photonics often refers to more application-related research. The term optoelectronics, which by construction is a somewhat narrower field than photonics dealing only with active elements involving an electrical interaction, nonetheless frequently is used to include passive photonic elements as well. In addition, the overlap between all of these fields and "optics" is unclear, and different definitions are used in different parts of the world and in different industries.The term photonics may, but doesn't always, imply 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 an admixture 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.
Applications of Photonics:correction of poor eyesight, laser surgery, surgical endoscopy, tattoo removal

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