Оптоволокно - Optical fiber

1. Optical fiber

2.

Optical fiber - a highly reliable system for transmitting data
over long distances.With low-loss optical fiber link can
transmit the signal over distances of tens of kilometers
without amplifiers.
Optical fiber - yarn of optically transparent material (glass,
plastic) used to transfer light inside by total internal
reflection.

3. Fiber optic cable.

4.

-Hydrophobic aggregates are used in communication
cables for water swelling properties.
-Central strength element (CSE) - steel wire or fiberglass rod
inside the dielectric optical cable, twisted around which
the optical modules. Serves to reinforce the structure of the
cable, under the influence of various loads, including wind
loads and tension loads

5. Advantages of fiber

Absolute protection from electrical interference
Complete absence of radiation
Unauthorized connections to the cable is almost impossible
Speed data transmission via fiber optic system is from 1 to
10Gbit / s.
Allows you to transmit information over long distances.
Fire and explosion safety
Small size and weight
High reliability optical media: optical fibers do not oxidize, do
not get wet, are not subject to the weak electromagnetic
interference.

6. Disadvantages of optical fiber

The relative fragility of optical fiber. If a strong bending of the cable
may break fibers or turbidity due to the appearance of microcracks.
Complexity compounds in case of breakage.
Complex manufacturing process of both the fiber and the fiber
optic link components.
Price
The complexity of signal
conversion
Dimming fiber with time
due to aging.

7. Devices

Optical Distribution Frame - box to connect fiber
optic cable with standard connectors.

8.

Cable sleeve - a device for mechanical and
electrical connection cables in the cable line, and
for connecting it to electrical installations and
power lines.

9.

The multiplexer - device that allows using light beams
with different wavelengths to transmit on the same
communication line of multiple different data streams.

10.

Welding machine - a device for connecting
optical fiber lines (welding occurs electrocution).

11. Example

12.

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