Fiber
Optic Cable
A Fiber optic Cable is made of glass or plastic and transmit
signals in the form of light. Optical fiber working principle based on the Total
internal refraction. So, understand optical fiber, we first need to explore
several aspects of the nature of light.
Light travels in a straight line as long as it is moving
through a single uniform substance. If a ray of light travelling through one
substance suddenly enters another substance (of a different density), the ray
changes direction.
What is Optical Fiber?
Optical fiber is a type of cable that has a number of optical
fiber bunded together. Which are normally covered in their individual
protective plastic cover. Optical fiber use to transfer digital data signal in
the form of light up to distance hundreds of miles with higher throughout rates
than other cable. All optical fiber use a core of hair-like transparent silicon
covered with less refractive indexed cladding to avoid light leakage to the
surroundings. Due to the extreme sensitivity of the optical fiber, it is
normally covered with a high-strength, light weight protective material like Kevlar.
Structure of Optical Fiber Cable:
An optical fiber is a cylindrical dielectric wave guide (Non
conducting wave guide) that transmit light along its axis, by the process of
total internal reflection. The fiber consists of a core surrounded by a cladding
layer, both of which are made of dielectric material.
What Is the Light Source of Fiber Optics?
-
LED or LASER.
The Most Common Connector of Optical Fiber Cable are:
SC Connector
ST Connector
MT-RJ Connector
Propagation Mode of Optical Fiber
Advantages of Fiber-Optics over metallic cable (twisted pair or coaxial):
- Greater bandwidth & Faster Speed
- Cheap
- Thinner & Light-weighted
- Higher carrying Capacity
- Less signal degradation
- Light signals
- Long Life Span
Disadvantages of
Fiber-Optics
- · Limited application
- ·
Low power
- ·
Fragility
- ·
Distance
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