Attenuation in optical fiber
Attenuation is the decrease in light power during light propagation along an
The attenuation can be caused by three factors (1) scattering (2) absorption
and (3) bending.
The most common form of sc
Optical couplers are devices which split light to divert them into multiple
paths or combine light from multiple paths to channel them into a single
In Directional couplers, light energy generally flows in one direction
Light as a stream of photons
Light is also a physical manifestation and consists of discrete particles.
Such particles have been designated as photons.
Some of these characteristics are;
(1) Any single ray of light has a fixed, discrete energy level.
Dispersion is defined as a pulse spread due to the light traveling at different
velocities inside the core depending on the wavelength.
A pulse of light becomes increasingly distorted as it travels along a fiber. This
distortion can be catego