Certified Fiber Optics Final Exam Questions and Answers

Certified Fiber Optics Final Exam Questions and Answers the applications of optical fiber communications have increased at a rapid rate, since the first commercial instillation of a fiber optic system in the - Answer- 1970's The loss of a signal strength is called - Answer- attenuation A single binary digit Is called a - Answer- Bit An eight bit group is called a - Answer- Bite The _______ is used to express gain or loss in a fiber optic system or component - Answer- Decibel 1mw of power is ___dbm - Answer- 0 dbm A loss of 3dbm is a _____ percent loss in power. - Answer- 50% Power is measured ______in a fiber optic system - Answer- dbm Loss is measured in____ in a fiber optic system - Answer- db light is electromagnetic energy with a ____wavelength and ____ frequency than radio waves - Answer- shorter, higher The _____ is used to measure light - Answer- measure the deflection of light is called_____ - Answer- refraction when light passes from one medium to another some of the light energy is _____back into the first material - Answer- Reflected The refractive index profile describes the relation between the indices of ____ and ______.The core of the multimode optical fiber has the highest refractive index. - Answer- Core, Cladding What makes up an optical fiber - Answer- core, cladding, coating mode is another name for - Answer- Path single mode fiber have a _____core than multimode fibers - Answer- smaller the part of the multimode optical fiber that functions as a mode filter is the______ - Answer- cladding The standard core diameters of multimode fiber are___ and ___um. - Answer- 50nm, 62.5 _______strength is the ability of a fiber to be stretched or pulled without breaking - Answer- Tensile The Tensile strength of a fiber is_______ when it is bent - Answer- Refracted The number of modes in an optical fiber decreases as the ___increases - Answer- Wavelength Bandwidth is and effective indication of the rate at which____ can be sent - Answer- Intelligence Graded index fibers uses numerous concentric layers of glass to reduce______ - Answer- Modal Dispersion The number of modes in an optical fiber ____as the core diameter decreases - Answer- Decreases in accordance with the (ISO) (IEC) 1801 specifications, the___ was designed for use with OM1 and OM2 fibers - Answer- LED