21. Most of the optical power is carried out in core region than in cladding.
22. The . . . . . . . . . ray passes through the axis of the fiber core.
23. For lower bandwidth applications . . . . . . . .
24. 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?
25. The effects of intrinsic absorption can be minimized by
26. The optical fiber incurs a loss in signal power as light travels down the fiber which is called as . . . . . . . .
27. When a ray of light enters one medium from another medium, which quality will not change?
28. The maximum bit rate that may be obtained on an optical fiber link is 1/3Γ.
29. What is different in case of cross-phase modulation from self-phase modulation?
30. Plastic fibers are less widely used than glass fibers.
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