Largest angle at which a ray can intersect the fiber core and still allow the incoming light to be guided by the core.Select one:a. Numerical aperture b. critical anglec. brewster angle d. acceptance angle

The velocity of light in the core of a step index fibre is 2 × 108 ms−1 ,and the critical angle at the core–cladding interface is 70°. Determine thenumerical aperture and the acceptance angle for the fibre in air, assumingit has a core diameter suitable for consideration by ray analysis. ( 3 marks)The velocity of light in a vacuum is 3 × 108 ms−

An optical fiber has a numerical aperture of 0.20 and a cladding refractive index of1.59. Determine: (a) the acceptance angle for the fiber in water which has a refractive index of 1.33;(b) the critical angle at the core–cladding interface. Comment on any assumptions made about thefiber.

step-index fibre has a numerical aperture of 0.26, a core refractive index of 1.5 and a core diameter of 100 micrometer. Calculate the acceptance angle.Question 1Answera.1.47° b.

The incidence angle of light should be less than critical angle for total internal reflection ?Group of answer choicesTrueFalse

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.a.0.06μsecb.0.30μsecc.0.90μsecd.1.00μsec