Physics of Fiber Optics

History Among all the pioneers in this industry, no one can be the main leader in discovery and development. This competitive environment is an integral part of progress in this field. Not all discoveries are considered proprietary. A lot of information was conveyed among the leading scientists who developed this technology. French engineer Claude Chappe invented a telegraph using a series of semaphores installed at the tower to exchange information between the 1880 patented optical telephone system Alexander Graham Bell. .

Basic area of ​​collaborative research: Nonlinear Physics, Plasma Physics, Nonlinear Optics, Laser Physics, Fiber Laser, Ultra Short Light Pulse in Fiber Waveguide, Light Induced Kinetic Effect in Molecular System, Atomic Molecule, Cluster Media Spectrum formation, glass formation low frequency and Raman scattering method, diffraction optics, new information technology, advanced signal and data statistical processing, information processing method and algorithm applied to aerospace image processing

Optical fibers or fibers refer to media and techniques related to the transmission of information along optical pulses of glass or plastic wires or fibers. Fiber optic cables can contain varying amounts of glass fibers, from several to several hundred. There is another glass layer called cladding around the glass fiber core. A layer of protective covering called a buffer tube, the jacket layer functions as the final protective layer for a single chain. The fiber transmits data in the form of particles (or photons) of pulsed light through the cable. The glass fiber core and the cladding each have different refractive indices and bend the incident light at an angle. When optical signals are transmitted over fiber optic cables, they reflect the core and cladding in a series of zigzag bounces and obey a process called total internal reflection.

In optical fibers, the critical angle is described with respect to a parallel axis extending down the center of the fiber. Therefore, the critical angle of the fiber = (90 degrees - physical critical angle). In optical fibers, the angle of light is always greater than the critical angle (Freudenri 6), so light passes through the core (m 1, high refractive index) continuously through the core (m 1, low refractive index) . Once the fiber passes quality control, it is sold to telephone companies, cable companies, and network providers. Many companies are currently replacing old copper wire systems with new fiber based systems to increase speed, capacity, and clarity. The future of optical fiber depends on improvements made by ongoing research. Researchers expect that the performance of optical fiber products will improve and the cost of short-distance applications will be reduced