railway RRB JE (CBT I + CBT II) Mock Test 2024 Electromagnetic Theory Waveguides and Guided Waves Optical Fiber
Which of the following is CORRECT function of cladding in optical fiber cable?
1
Protects the core from absorbing unwanted surface contaminants.
2
It ensures that the signal remains confined to core.
3
Reduces the mechanical strength of the fiber.
4
Improve scattering losses.