Which one of the following statements is NOT true for a step index optical fibre?
A. It can support multiple modes
B. HE11 mode is its lowest order mode
C. The refractive index of the cladding is higher that of the core
D. At a given wavelength, single mode operation is possible by proper choice of core diameter, core and cladding refractive indices
Answer: Option C
This Question Belongs to Electronics And Communications Engineering >> Optical Communication
A. Dispersion-flattened single mode fiber
B. Dispersion-enhanced single mode fiber
C. Dispersion-compressed single mode fiber
D. Dispersion-standardized single mode fiber
Photonic crystal fibers also called as . . . . . . . .
A. Conventional fibers
B. Dotted fibers
C. Stripped fibers
D. Holey fibers
An optical fiber behaves as a birefringence medium due to differences in . . . . . . . .
A. Effective R-I and core geometry
B. Core-cladding symmetry
C. Transmission/propagation time of waves
D. Refractive indices of glass and silica
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