DEFINTIONS

CROSSTALK: the coupling or transfer of unwanted signals from one pair within a cable to another pair
WAVEGUIDES: a structure that electromagnetic waves along their length the core fiber in an optical fiber is an optical waveguide.
FTTH: uses optical fiber from the central office to the home there are no active electronics helping with transmission of data.
SIMPLEX: a link that can care a signal in only one direction.
HALF-DUPLEX: a system in which signals can be sent in two directions but no at the same time.
FULL DUPLEX: a system in which signals may be transmitted in two directions at the same time.
PHOTODIODE: a component that converts light energy into electrical energy .the photodiode is used as a receiving end of a fiber optic link.
Amplitude modulation: a method of signal transmission in which the amplitude of the carrier is varied in accordance with the signal.
Analog transmission: an electrical signal measured in hertz
Digital transmission: processing storing of data by representing the data in a binary value.
Sample rate: the number of samples of a sound that are taken per second to represent the event digitally.
Electromagnetic wave: Wave produced by the acceleration of an electric charge.
Refeaction: a return of electromagnetic energy.
Medium: when referring to Ethernet LANS the transceiver in the Ethernet networks.
Total internal reflection: the reflection in a medium of a given refractive index.
Fresnel reflection: reflection of a small amount of light passing from a medium of one reflective index into a medium of a different index.
Tensile strength: resistance to pulling or stretching forces.
Dispersion: a spreading of light along the propagation path does to one or more factors.
Bandwidth: the transmission capacity of media.
Polarity: identifies which side of an electrical circuit is positive.
Absorption: loss of