Crosstalk
• Undesired transfer of signals between communication channels.
Waveguides
• An electromagnetic feed line used in microwave communications.
FTTH
• “Fiber to the Home”, means that delivery of communication signal over fiber from the operator’s switch to a home or business.
Simplex
• A communication mode where only one signal is transmitted and always goes the same direction.
Half-Duplex
• A communication mode where data can be transmitted both directions on a signal carrier but not at the same time.
Full-Duplex
• A communication mode where data can be transmitted both directions on a signal carrier at the same time.
Photodiode
• A device that detects and convert light into an energy signal using a photodetector.
Amplitude Modulation
• A method of imposing data onto an alternating current carrier waveform.
Analog Transmission
• A transmission method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that of a variable
Digital Transmission
• Is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel.

Sample Rate
• The number of samples of a sound that are taken per second to represent the event digitally when developing an audio sound for computers or telecommunication.
Electromagnetic Wave
• A wave that consists of an associated electric and magnetic effect and travels at the speed of light
Refraction
• The turning of light, wave, etc. from one to another of a different density.
Medium
• Any mass that light or any waves can travel through.
Total Internal Reflection
• The complete reflection of a light ray at the boundary of two media, when the ray is in the medium with greater refractive index
Fresnel Reflection
• The reflection of a portion of the light incident between two media having different refractive indexes.
Tensile Strength
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Dispersion
• A broadening or spreading of light along the propagation path due to one or more factors within the medium though which light is traveling.
Bandwidth
• The range of frequencies within a given band, in particular that used for transmitting a signal.
Polarity
• IDs which side of an electrical circuit is positive and which is negative.
Absorption
• The loss of power in an optical fiber resulting from conversion of optical power.
Scattering
• The redirection of light caused by the atomic structures and particles along the light’s path.
Equilibrium Mode Distribution
• The distribution of light that is no longer changing with fiber length or with input modal excitation.
Personal Protective Equipment
• Specialized clothing or equipment worn by employees for protection against health and safety hazards.
Good Work Habits
• Keep a clean workspace
• Observe your surroundings
• Use tools for the job they were designed for
• Don’t eat or drink in the work area
• Report issues/injuries immediately
• Know how to reach emergency personnel
• Place emergency contacts in your phone