LIGHT TRANSMITTING CABLES.
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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A light cable is composed of two parts, the fiber center and the thin glass housing. The fiber is made of material of higher refractive index, and the housing of lower refractive index. The housing serves to protect the surface of each individual fiber so that it remains smooth and clean. It also separates one fiber from another in the cable. The main function of the housing is, however, to provide an outside layer of a lower refractive index on the fiber so that the phenomenon of total reflection is produced when a light beams enters a single light fiber. In this way, light can be transmitted through a curved and soft light cable.
- Fiber Optics and Integrated Optics