Sharp bends or micro bends causes significant losses in fiber. State true or false

Related MCQs

• The insertion losses of the fiber splices are much less than the Fresnel reflection loss at a butted fiber joint. State whether the given statement is true or false.
• Optical fibers suffer radiation losses at bends or curves on their paths. State true or false
• The losses due to hydrogen absorption and reaction with fiber deposits can be temporary. State whether the given statement is true or false.
• If the input power 100μW is launched into 6 km of fiber, the mean optical power at the fiber output is 2μW. What is the overall signal attenuation through the fiber assuming there are no connectors or splices?
• . When the input and output power in an optical fiber is 120μW & 3μW respectively and the length of the fiber is 8 km. What is the signal attenuation per km for the fiber?
• In a GaAs LED, compute the loss relative to internally generated optical power in the fiber when there is small air gap between LED and fiber core. (Fiber coupled = 5.5 * 10-4Pint)
• Fiber based lasers provide diffraction-limited power at higher levels than solid-state laser. State whether the given statement is true or false
• Numerical aperture is constant in case of step index fiber. State whether the statement is true or false.
• The in-homogeneities in Mie scattering can be reduced by coating of a fiber. State whether the following statement is true or false.
•  For many applications which involve optical fiber transmission, an intensity modulation optical source is not required. State whether the given statement is true or false.