00:01
Hello students, we'll solve this question and in this question we have to calculate the three factors here.
00:06
The first among them is the core radius.
00:09
Let us calculate the core radius first.
00:16
So core radius which i'll represent by a, this is given by 2 times delta divided by n1 square minus n2 square to the power 0 .5.
00:31
Here a represents the core radius, delta represents the refractive index step.
00:42
Refractive index n1 and n2, these represent the refractive indices of the core and cladding respectively.
00:58
Refractive indices of the core and cladding respectively.
01:14
Now in the question it is given that delta is equal to minus n, so it will be equal to 0 .005, n1 is equal to 1 .45 and n2 is equal to 1.
01:30
Let us put these values into this formula to find out the value of core radius.
01:35
The value of core radius that is a will be equal to 2 times 0 .005 divided by 1 .45 square minus 1 square to the power 0 .5.
01:49
On calculation, this will be equal to 2 .43.
01:54
So this is the value of core radius.
01:56
Now let us calculate the second parameter that is the spot size.
02:05
Spot size let us represent it by small l...