Nt1310 Unit 7 Exercise 1

NT1310
Unit 7 Exercise 1 1. Crosstalk: A disturbance caused by electromagnetic interference, along a circuit or a cable pair. A telecommunication signal disrupts a signal in an adjacent circuit and can cause the signals to become confused and cross over each other 2. Waveguides: A circular, elliptical or rectangular metal tube or pipe through which electromagnetic waves are propagated in microwave and RF communications. The wave passing through the medium is forced to follow the path determined by the physical structure of the guide. 3. FTTH: Short for fiber-to-the-home, the installation of optical fiber from a telephone switch directly into the subscribers home. Fiber optic cable is an alternative to coaxial cable. 4. Simplex: refers to one-way communications where one party is the transmitter and the other is the receiver. An example of simplex communications is a simple radio, which you can receive data from stations but can't transmit data. 5. Half-Duplex: Refers to the transmission of data in just one direction at a time. 6. Full-Duplex: Refers to the transmission of data in two directions simultaneously 7. Photodiode: component that light energy into electrical energy. Receiving end of fiber optic connection 8. Amplitude Modulation: done by varying the amplitude of a light wave 9. Analog transmission: signal that varies continuously through time in response to an input 10. Digital Transmission: refers to data transmission in binary values 11. Sample Rate: Typically expressed in samples per second, or hertz (Hz), the rate at which samples of an analog signal are taken in order to be converted into digital form. A PCs sound card typically will sample a received analog signal, such as through a microphone, and digitize it for use by the computer. A higher sampling rate provides a better quality reproduction than a lower sampling rate. 12. Electromagnetic Wave: refers to the complete range of wavelengths of electromagnetic radiation. 13. Refraction: the bending of a light beam as it enters a medium of different density 14. Medium: any material or space through which electromagnetic radiation can travel 15. Total Internal Reflection: reflection of light in a medium of a given refractive index off of the interface with a material of a lower refractive index at an angle at or above the critical angle 16. Fresnel Reflection: occurs at the air/glass interfaces at the entrance and the exit ends 17. Tensile Strength: Resistance to pulling or stretching forces 18. Dispersion: broadening or spreading of light along the propagation path due to one or more factors within the medium through which the light is traveling 19. Bandwidth: The amount of data that can be transmitted in a fixed amount of time. For digital devices, the bandwidth is usually expressed in bits per second (bps) or bytes per second. For analog devices, the bandwidth is expressed in cycles per second, or Hertz (Hz). 20. Polarity: Identifies which is positive or negative 21. Absorption: loss of power in an optical fiber 22. Scattering: the redirection of light 23. ) The amount of data that can be transmitted in a fixed amount of time. For digital devices, the bandwidth is usually expressed in bits per second (bps) or bytes per second. For analog devices, the bandwidth is expressed in cycles per second, or Hertz (Hz). 24. Equilibrium Mode Distribution: : is the distribution of light that is no longer changing with fiber length or with input modal excitation 25. Personal Protective equipment: refers to protective clothing, helmets, goggles, or other garments or equipment designed to protect the wearer's body from injury