Fiber Optic Wiki

CONNECTORS / TERMINATIONS WITH FIBER GLOSSARY (8)

October 25, 2011

Plenum Cable: Cable made of fire-retardant material that meets electrical code requirements (UL 910) for low smoke generation and installation in air space.

The Fiber Optic Association

October 25, 2011

Fiber Optics is the communications medium that works by sending optical signals down hair-thin strands of extremely pure glass or plastic fiber. The light is "guided" down the center of the fiber called the "core". The core is surrounded by a optical material called the "cladding" that traps the light in the core using an optical technique called "total internal reflection." The fiber itself is coated by a "buffer" as it is made to protect the fiber from moisture and physical damage. The buffer is what one strips off the fiber for termination or splicing.

Fiber Types: Multimode & Singlemode, Core/Cladding Size

October 25, 2011

The two types of fiber are multimode and singlemode. Within these categories, fibers are identified by their core and cladding diameters expressed in microns (one millionth of a meter), e.g. 50/125 micron multimode fiber.

PCS/HCS (plastic or hard clad silica

October 25, 2011

PCS/HCS (plastic or hard clad silica, plastic cladding on a glass core) has a smaller glass core (around 200 microns) and a thin plastic cladding.

Manufacturing Optical Fiber

October 25, 2011

The manufacturing of optical fiber to sub-micron precision is an interesting process involving making ultra-pure glass and pulling it into strands the size of a human hair.

CONNECTORS / TERMINATIONS WITH FIBER GLOSSARY (3)

October 24, 2011

Cladding: The layer of glass or other transparent material surrounding the light-carrying core of an optical fiber. It has a lower refractive index than the core and thus confines light in the core. Coatings may be applied over the cladding. Material that surrounds the core of an optical fiber. Its lower index of refractionk compared to that of the core causes the transmitted light to travel down the core of a fiber. Optical cladding promotes total internal reflection for the propagation of light in a fiber.

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