Fiber Optics Exam Questions and Answers 100% Pass

Fiber Optics Exam Questions and Answers 100% Pass Mode Field Diameter - Answer- The diameter of the light emerging from the end of the fiber is also termed... core, cladding, and prime coating - Answer- The basic construction of fiber is: zig-zag - Answer- A multimode step-index fiber transmits light down the fiber in what pattern? Single-Mode - Answer- This type of fiber has only one mode for the light to travel down. glass core and plastic cladding - Answer- Plastic-clad silica cables have what kind of construction? material dispersion - Answer- different wavelengths travel at different speeds along the same path 5-10 micrometers - Answer- the typical core diameter range for single-mode fiber optic cables 125 micrometers - Answer- typically the cladding of a fiber, regardless of its core size is what diameter? waveguide dispersion - Answer- a singe wavelength travels at different speeds in different materials .50 km - Answer- if you are using a fiber optic cable that is designed to transmit 600 MHz for a distance of .75 km, how far could an 800 MHz signal travel on the same cable microbend loss - Answer- little bumps in the core at the junction of the core and cladding are called? frequency goes up - Answer- distance goes down attenuation - Answer- dB/Km is how ________ of optical power is measured numerical aperature - Answer- The _______ ________ of the optical source, fiber, and optical receiver must match for best transmission tight buffer - Answer- allows a lower tensile strength but a higher impact and crush resistance plenum-duty fiber - Answer- type fiber used if you are installing it in a return air vent / space in a building strength members - Answer- the part of the fiber optic cable that allows you to pull it when you are installing it MHz per Km - Answer- many manufacturers specify bandwidth-length in ______ instead of specifying dispersion in the modal offerings 300 dB/Km - Answer- plastic fiber would have an attenuation in the range of shorter wavelength - Answer- rayleigh scattering decreases with ________ light waves Graded Index Fiber - Answer- fiber optic cable constructed by layers of increasing index of refraction core material single mode fiber - Answer- when using ________ fiber optic cable you must worry about matching the cable to the frequency of the light you are transmitting more than other types of cable single mode fiber - Answer- has smaller core so it is particular about light frequency modal dispersion - Answer- doesn't exist in single mode fiber (zig-zag flatlines out) must go slower but greater distance - Answer- in a single mode fiber optic cable, you can send a 1300nm wavelength faster but for a shorter distance, what would be the effect if you would send a 150