A certain fiber-optic cable has the following characteristics: n1 = 1.82 and n2 = 1.73. What is the value of θc?

Question added by jitendra singh lodha jitendra singh lodha , Desk engineer , Powermech project pvt ltd
Date Posted: 2014/06/24

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by athiq-ur-rahman khaja mohammed , Sr. Telecom Engineer , Royal Commission for Jubail and Yanbu

In this n1=1. and n2=1.

Total Internal Reflection θc (critical angle) =1. calculated cosh(n2/n1)

Acceptance angel θa = sinh[(n1/n0)*sin(θc)] =2. (n0 is1 for air)

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