Most of the optical power is carried out in core region than in cladding.
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ECE · all questionsOptical Communication
Optical Communication
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The . . . . . . . . . ray passes through the axis of the fiber core.
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For lower bandwidth applications . . . . . . . .
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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?
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The effects of intrinsic absorption can be minimized by
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The optical fiber incurs a loss in signal power as light travels down the fiber which is called as . . . . . . . .
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When a ray of light enters one medium from another medium, which quality will not change?
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The maximum bit rate that may be obtained on an optical fiber link is 1/3Γ.
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What is different in case of cross-phase modulation from self-phase modulation?
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Plastic fibers are less widely used than glass fibers.
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The light sources used in fibre optics communication are . . . . . . . .
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Which of the following is not a metallic impurity found in glass in extrinsic absorption?
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What is dispersion in optical fiber communication?
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A step-index fiber has core refractive index 1.46 and radius 4.5μm. Find the cutoff wavelength to exhibit single mode operation. Use relative index difference as 0.25%.
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The phenomenon which occurs when an incident wave strikes an interface at an angle greater than the critical angle with respect to the normal to the surface is called as . . . . . . . .
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Constructive interference occur when total phase change after two successive reflections at upper and lower interfaces is equal to? (Where m is integer)
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One of the given statements is true for intermodal dispersion. Choose the right one.
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Consider a single mode fiber having core refractive index n1 = 1.5. The fiber length is 12m. Find the time taken by the axial ray to travel along the fiber.
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A single-mode step-index fiber or multimode step-index fiber allows propagation of only one transverse electromagnetic wave.
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Numerical aperture is constant in case of step index fiber.
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