There is no noticeable boundary between core and cladding for:
Correct answer: C. Single-mode step index fibre
- A. Multi-mode step index fibre:
- B. Multi-mode graded index fibre:
- C. Single-mode step index fibre
- D. All types of fibre:
Explanation
Explanation: In a single-mode step index fibre, the core has a uniform refractive index, and the boundary between the core and cladding is distinct. In multi-mode step index and multi-mode graded index fibres, the core and cladding may have some gradation, but it's more noticeable than in single-mode fibres.
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About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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