Explain total internal reflection, Electrical Engineering

Assignment Help:

Explain Total internal reflection?

The refractive index of a medium is defined as the ratio of velocity of light in vacuum to the velocity of light in that medium

nx = C/V

where nx is the refractive index of the medium, C is the velocity of light in vacuum and V is the velocity of light in in which medium.
Consider two mediums of refractive indices n1 and n2, where n1>n2. When a ray travels from n1 (denser) to n2 (rarer), the refracted ray bends more away from the normal. This is display below:

1239_total internal reflection.png


According to Snell's law of refraction
n1 sin O1 = n2 sin O2
sin O1/ sin O2= n2/n1
when we make the angle of incidence as some Oc such that O2=900. This angle Oc is known as Critical angle. The condition is shown below:

704_total internal reflection 1.png

When the incident angle increases from Oc, the light is reflected back within the originating dielectric medium. This phenomenon is known as total internal reflection. Therefore it may be observed that total internal reflection occurs at the interface among two dielectrics of differing refractive indices, while light is incident on the dielectric of lower index from the dielectric of higher index. The total internal reflection is shown below:

2284_total internal reflection 2.png

The light ray passing by the optic fibre follows the total internal reflection at the core-cladding interface.


Related Discussions:- Explain total internal reflection

Control system, I need some help for doing the assignment

I need some help for doing the assignment

Can you explain about slew rate, Q. Can you explain about Slew Rate? Sl...

Q. Can you explain about Slew Rate? Slew (or slewing) rate is a measure of how fast the output voltage can change. It is given by the maximum value of dvo/dt , which is normall

Speed control of stepper motor by using microcontroller 89c5, Hello sir, m ...

Hello sir, m engineering final year student, we made a project as I mentioned above, I wanna add some extra feature on it, meant to modified it...want to add up some extra feature

Explain open loop control systems, Explain Open Loop Control Systems In...

Explain Open Loop Control Systems In an open-loop control system, the controller independently computes exact voltage or current required by the actuator to do the job and send

500Mhz Collpitts Oscillator, How to design an Oscillator Circuit (500 MHz r...

How to design an Oscillator Circuit (500 MHz range) with no Op amps?

Electric scooter, Hi there i need help with design battery charger for elec...

Hi there i need help with design battery charger for electric scooter 24v battery. i have to design sechmatic diagram and PCB for it. using Altuim design software many thanks 006

Show basic construction of mosfet, Q. Show Basic Construction of MOSFET? ...

Q. Show Basic Construction of MOSFET? The basic construction of the n-channel depletion-type MOSFET is provided in Figure. A slab of p-type material is formed from a silicon

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd