Difference between revisions of "Cables"

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(Created page with "<br/> <b style="font-size: large;">Cables</b><span class="c17 c15 c24"> can be electrical, fiber optic, or a combination of the two. Underwater electrical cables date back...")
 
 
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<b style="font-size: large;">Cables</b><span class="c16">    can be electrical, fiber optic, or a combination of the two. Underwater electrical cables date back to the advent of the telegraph the mid 1840s. Hemp, tar and jute were used around conductors. The advent of plastics and other synthetic materials brought about a variety of new cable designs. The components of a typical underwater electrical cable are:  </span><br/>
 
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<span class="c31">      </span><span class="c43"></span><b>Conductors</b><span class="c16">    —the metallic component of cables through which electrical power or electrical signals are transmitted.  </span><br/>
<b style="font-size: large;">Cables</b><span class="c17 c15 c24">    can be electrical, fiber optic, or a combination of the two. Underwater electrical cables date back to the advent of the telegraph the mid 1840s. Hemp, tar and jute were used around conductors. The advent of plastics and other synthetic materials brought about a variety of new cable designs. The components of a typical underwater electrical cable are:  </span><br/>
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<span class="c31">      </span><span class="c43"></span><b>Insulation</b><span class="c16">    —material applied around a conductor to provide electrical isolation.  </span><br/>
 
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<span class="c31">      </span><span class="c43"></span><b>Strength member</b><span class="c16">    —bears tensile load, ensuring that it does not transfer to the conductors. Internal strength members are made from various polymers. External strength members, referred to as armoring, are usually made from steel wire.  </span><br/>
<span class="c21">    §   </span><span class="c41 c24"></span><b>Conductors</b><span class="c17 c15 c24">    —the metallic component of cables through which electrical power or electrical signals are transmitted.  </span><br/>
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<span class="c31">      </span><span class="c43"></span><b>Jacket</b><span class="c16">    —outer polymer layer protecting the parts inside.  </span><br/>
 
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<span class="c16">    There are two basic types of fiber used: SingleMode (SM) and MultiMode (MM). SingleMode fiber is generally used where the distances to be covered are greater. There are generally five elements that make up the construction of a fiber-optic strand: the optic core, optic cladding, a buffer material, a strength material and the outer jacket. Underwater optic cables have a heavy outer jacket and/or armoring. Many designs protect the fibers by running through a flexible steel tube that is filled with a gel compound that cushions the fiber and impedes or blocks water penetration.  </span><br/>
<span class="c21">    §   </span><span class="c41 c24"></span><b>Insulation</b><span class="c17 c15 c24">    —material applied around a conductor to provide electrical isolation.  </span><br/>
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<span class="c16">    The optic core is the light-carrying element at the center of the optical fiber. It is commonly made from a combination of silica and germania. Surrounding the core is the optic cladding made of pure silica . It is this combination that makes the principle of total internal reflection possible. The difference in materials used in the making of the core and the cladding creates an extremely reflective surface at the point in which they interface. Light pulses entering the fiber core reflect off the core/cladding interface and thus remain within the core as they move down the line.  </span>
 
 
<span class="c21">    §   </span><span class="c41 c24"></span><b>Strength member</b><span class="c17 c15 c24">    —bears tensile load, ensuring that it does not transfer to the conductors. Internal strength members are made from various polymers. External strength members, referred to as armoring, are usually made from steel wire.  </span><br/>
 
 
 
<span class="c21">    §   </span><span class="c41 c24"></span><b>Jacket</b><span class="c17 c15 c24">    —outer polymer layer protecting the parts inside.  </span><br/>
 
 
 
<span class="c17 c15 c24">    There are two basic types of fiber used: SingleMode (SM) and MultiMode (MM). SingleMode fiber is generally used where the distances to be covered are greater. There are generally five elements that make up the construction of a fiber-optic strand: the optic core, optic cladding, a buffer material, a strength material and the outer jacket. Underwater optic cables have a heavy outer jacket and/or armoring. Many designs protect the fibers by running through a flexible steel tube that is filled with a gel compound that cushions the fiber and impedes or blocks water penetration.  </span><br/>
 
 
 
<span class="c17 c15 c24">    The optic core is the light-carrying element at the center of the optical fiber. It is commonly made from a combination of silica and germania. Surrounding the core is the optic cladding made of pure silica . It is this combination that makes the principle of total internal reflection possible. The difference in materials used in the making of the core and the cladding creates an extremely reflective surface at the point in which they interface. Light pulses entering the fiber core reflect off the core/cladding interface and thus remain within the core as they move down the line.  </span>   (long page from alpha-section)
 

Latest revision as of 22:29, 29 November 2023

Cables can be electrical, fiber optic, or a combination of the two. Underwater electrical cables date back to the advent of the telegraph the mid 1840s. Hemp, tar and jute were used around conductors. The advent of plastics and other synthetic materials brought about a variety of new cable designs. The components of a typical underwater electrical cable are:
Conductors —the metallic component of cables through which electrical power or electrical signals are transmitted.
Insulation —material applied around a conductor to provide electrical isolation.
Strength member —bears tensile load, ensuring that it does not transfer to the conductors. Internal strength members are made from various polymers. External strength members, referred to as armoring, are usually made from steel wire.
Jacket —outer polymer layer protecting the parts inside.
There are two basic types of fiber used: SingleMode (SM) and MultiMode (MM). SingleMode fiber is generally used where the distances to be covered are greater. There are generally five elements that make up the construction of a fiber-optic strand: the optic core, optic cladding, a buffer material, a strength material and the outer jacket. Underwater optic cables have a heavy outer jacket and/or armoring. Many designs protect the fibers by running through a flexible steel tube that is filled with a gel compound that cushions the fiber and impedes or blocks water penetration.
The optic core is the light-carrying element at the center of the optical fiber. It is commonly made from a combination of silica and germania. Surrounding the core is the optic cladding made of pure silica . It is this combination that makes the principle of total internal reflection possible. The difference in materials used in the making of the core and the cladding creates an extremely reflective surface at the point in which they interface. Light pulses entering the fiber core reflect off the core/cladding interface and thus remain within the core as they move down the line.