lec19 - ( n=2.42 ) . Small critical angle at diamond air...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Total Internal Reflection Total internal reflection occurs when – the incident medium has a larger index of refraction, and – when the incident angle is larger than the critical angle The critical angle is the incident angle for which the refracted angle is 90 0 For incident angle larger than θ c , All of the light is reflected back. No light is transmitted into the second medium. C 0 2 90 = ) ( 2 1 n n > 2 n = 1 2 1 sin n n C 1 ) ( 2 1 n n > 2 n C > 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Total Internal Reflection - Applications Glass Prism ( n=1.5 ) – Critical angle at glass-air interface: Why diamonds sparkle – Diamond has large index of refraction
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ( n=2.42 ) . Small critical angle at diamond air interface Optical fiber Consists of a core fiber surrounded by cladding (index of refraction smaller than that of the core) Total internal reflection enables light to be trapped and guided 1 8 . 41 5 . 1 1 sin = = C Core (flint n=1.667) Cladding (crown glass n=1.523) 45 45 45 1 4 . 24 42 . 2 1 sin = = C 1 01 . 66 667 . 1 523 . 1 sin = = C 01 . 66 >...
View Full Document

This note was uploaded on 12/06/2011 for the course PHYSICS 111&112 taught by Professor Unknown during the Spring '11 term at Ohio State.

Page1 / 2

lec19 - ( n=2.42 ) . Small critical angle at diamond air...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online