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Learning About Options in Fiber - Cables Plus USA

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SECTION 3—REFERENCES<br />

Buffer Coat<strong>in</strong>g<br />

Buffer Tube<br />

Buffer<br />

Bus Network<br />

Byte<br />

Cable Assembly<br />

Cable Bend Radius<br />

Cable<br />

CCIT<br />

Central Member<br />

Channel Separation<br />

Channel<br />

Chromatic Dispersion<br />

Chrom<strong>in</strong>ance Signal<br />

Cladd<strong>in</strong>g<br />

Cleavers<br />

Coat<strong>in</strong>g<br />

A protective layer, such as an acrylic polymer, applied over the fiber cladd<strong>in</strong>g<br />

for protective purposes.<br />

A hard plastic tube hav<strong>in</strong>g an <strong>in</strong>side diameter several times that of a fiber that<br />

holds one or more fibers.<br />

A protective coat<strong>in</strong>g applied directly to the fiber such as a coat<strong>in</strong>g, an <strong>in</strong>ner<br />

jacket, or a hard tube.<br />

A network topology <strong>in</strong> which all term<strong>in</strong>als are attached to a transmission<br />

medium serv<strong>in</strong>g as a bus.<br />

A b<strong>in</strong>ary str<strong>in</strong>g (usually of 8 bits) operated as a unit.<br />

<strong>Fiber</strong>-optic cable that has connectors <strong>in</strong>stalled on one or both ends. General<br />

use of these assemblies <strong>in</strong>cludes the <strong>in</strong>terconnection of fiber-optic systems<br />

and opto-electronic equipment. If connectors are attached to only one end of<br />

a cable, it is known as a pigtail. If connectors are attached to both ends, it is<br />

known as a jumper.<br />

This term implies that the cable is experienc<strong>in</strong>g a tensile load. Free bend<br />

implies a smaller allowable bend radius s<strong>in</strong>ce it is at a condition of no load.<br />

One or more optical fibers enclosed with<strong>in</strong> protective cover<strong>in</strong>g(s) and strength<br />

members.<br />

See Consultative Committee on International Telegraph and Telephone.<br />

The center component of a cable, it serves as an antibuckl<strong>in</strong>g element to resist<br />

temperature-<strong>in</strong>duced stresses. Sometimes serves as a strength element. The<br />

central member is composed of steel, fiberglass, or glass-re<strong>in</strong>forced plastic.<br />

This specification describes how well a coupler can dist<strong>in</strong>guish wavelengths.<br />

A communications path or the signal sent over that channel. Through multiplex<strong>in</strong>g<br />

several channels, voice channels can be transmitted over an optical<br />

channel.<br />

This condition occurs because different wavelengths of light travel at different<br />

speeds. No transmitter produces a pure light source of only one wavelength.<br />

Instead, sources produce a range of wavelengths around a center wavelength.<br />

These wavelengths travel at slightly different speeds, result<strong>in</strong>g <strong>in</strong> pulse<br />

spread<strong>in</strong>g that <strong>in</strong>creases with distance.<br />

The portion of the NTSC color-television signal that conta<strong>in</strong>s the color <strong>in</strong>formation.<br />

The lower <strong>in</strong>dex-of-refraction material that surrounds the core of an optical<br />

fiber, caus<strong>in</strong>g the transmitted light to travel down the core.<br />

Tools which allow the operator to break or scribe the fiber with a 90 degree<br />

endface perpendicular to the axis of the fiber with little surface damage or<br />

irregularities to the fiber.<br />

Thermoplastic layer directly adhered to cladd<strong>in</strong>g to give flexibility and<br />

strength.<br />

3-6

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