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 Optical Fibres 34 Flashcards |
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What is the relationship between the information carrying capacity of a cable and its bandwidth? |
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The information carrying capacity is directly proportional to its bandwidth. |
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Fill in the blank: The angle of incidence is equal to the angle of ______. |
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Reflection |
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True or False: Light behaves as a particle when interacting with materials and as a wave during transmission. |
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True |
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Riddle: I travel through glass, bending at angles, carrying data fast. What am I? |
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Light in an optical fiber |
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What is the primary application of fibre optic communications? |
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Long-distance telephone systems. |
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Fill in the blank: The principle governing the transmission of information in optical fibers is ______. |
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Total internal reflection |
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Which optical detector is known for being the fastest and most sensitive? |
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Avalanche Photo Diode (APD) |
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Multiple Choice Question: What is the critical angle in optical fibers? A) The angle of incidence that causes total internal reflection B) The angle at which light is refracted C) The angle of reflection D) The angle at which light strikes a surface |
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A) The angle of incidence that causes total internal reflection |
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True or False: The cladding of an optical fiber supports the transmission of information. |
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False. Cladding does not support any transmission of information. |
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What is the normalized frequency (v) range for single-mode transmission in optical fibers? |
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0 ≤ v ≤ vc, where vc = 2.405. |
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Fill in the blank: The primary specification of a fibre optic cable is ______, usually expressed in decibels per kilometre. |
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Attenuation |
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Which type of fibre optic cable is characterized by a core that provides multiple paths for light? |
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Multimode step-index cable. |
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Riddle: I have a varied index, highest in the center, guiding light to avoid dispersion. What am I? |
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Graded index fibre |
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What is the formula for the refractive index (n) in terms of the speed of light in air (c) and the speed of light in another medium (v)? |
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N = c/v |
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True or False: The acceptance angle (θa) is the maximum angle for total internal reflection in optical fibers. |
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True |
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What type of light source is typically used in short-distance, low-speed fibre optic systems? |
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Light Emitting Diodes (LEDs) |
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Fill in the blank: The quantum efficiency of an optical detector can be calculated as ηD = ______. |
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Electron generation rate / Incident photon rate |
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