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SEM micrographs of a photonic-crystal fiber produced at US Naval Research Laboratory. (left) The diameter of the solid core at the center of the fiber is 5 μm, while (right) the diameter of the holes is 4 μm Diagram of a photonic crystal fiber in perspective and cross-sectional views. A solid-core fiber is shown with a periodic air hole ...
Structured optical fibers, those based on channels running along their entire length go back to Kaiser and Co in 1974. These include air-clad optical fibers, microstructured optical fibers sometimes called photonic crystal fiber when the arrays of holes are periodic and look like a crystal, and many other subclasses.
Philip St. John Russell, FRS, (born March 25, 1953, in Belfast) is Emeritus Director of the Max Planck Institute for the Science of Light in Erlangen, Germany.His area of research covers "photonics and new materials", in particular the examination of new optical materials, especially of photonic crystal fibres, [1] and more generally the field of nano- and micro-structured photonic materials.
In fiber-optic communication, a single-mode optical fiber (SMF), also known as fundamental- or mono-mode, [1] is an optical fiber designed to carry only a single mode of light - the transverse mode. Modes are the possible solutions of the Helmholtz equation for waves, which is obtained by combining Maxwell's equations and the boundary conditions.
Photonic Crystal Fiber (PCF) & Supercontinuum generation: Prof. Sinha developed several analytical and numerical techniques for studying light wave propagation characteristics through specially designed photonic crystal fibers and developed experimental techniques for their characterization which have become topic of various text and reference ...
Single-mode optical fibers can be made with extremely low loss. Corning's Vascade® EX2500 fiber, a low loss single-mode fiber for telecommunications wavelengths, has a nominal attenuation of 0.148 dB/km at 1550 nm. [65] A 10 km length of such fiber transmits nearly 71% of optical energy at 1550 nm.
G.655 is an international standard that describes the geometrical, mechanical, and transmission attributes of a single-mode optical fibre and cable, developed by the Standardization Sector of the International Telecommunication Union that specifies one of the most popular types of single-mode optical fiber (SMF) cable.
Plastic optical fiber (POF) or polymer optical fiber is an optical fiber that is made out of polymer. Similar to glass optical fiber, POF transmits light (for illumination or data) through the core of the fiber. Its chief advantage over the glass product, other aspect being equal, is its robustness under bending and stretching.