The two main types of fiber optic cables are single-mode fiber and multi-mode fiber. Single-mode fiber has a smaller diameter and higher bandwidth; it works better for long distances as it reduces the potential for loss of signal strength. Multi-mode fiber can have a larger diameter and is frequently used for shorter distances. Many multi-mode fiber optics employ an LED to provide the light.
With communication grade fibers, data is transmitted through fiber optics as photons - commonly referred to as light particles - that pulse through the cable. A process called total internal reflection means the photons in the fiber can travel for long distances with minimal intensity reduction. This, of course, depends on the wavelength of the light and the fiber composition. Higher speed and capacity and a resistance to electrical interference is why fiber optics have essentially replaced copper wire in long distance phone lines and link computers within local networks.
In addition to communications, fiber optics were originally and are still commonly used for decorative and task lighting as well as sensing applications. Fiber optics are also utilized for endoscopy and inspecting the interiors of manufactured products. These applications rely on visible wavelengths of light with one bundle of fiber providing illumination and another coherent fiber bundle working with a lens to capture images. Specially designed fibers are used in applications like fiber optic sensors and fiber lasers. Additional uses for fiber optics include:
Dolan-Jenner was and continues to be one of the pioneers in fiber optics technology, serving the microscopy, imaging, and machine vision industries since 1962. Dolan-Jenner remains among the leading manufacturers of glass and quartz cables for flame sensing, OEM and custom fiber optics, measuring and machine safety devices, and fiber optic illumination systems. Dolan-Jenner is one of the few fiber optic companies in the United States to integrate into a single facility the design, engineering, and manufacture of fiber optic assemblies and electronics.
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