Optical Fiber

An optical fibre is based on:

In an optical fibre, core and cladding were made with materials of refractive indices $1.5$ and $1.414$ respectively. To observe total internal reflection, what will be the range of incident angle with the axis of optical fibre?

List the advantages of optical fibre over copper wiring for transmission of signals.

There is a relation connecting the refractive index of the fraction of light reflecting through the optical fibre.

What is the equation of the light reflected off in the surface of the optical fibre?

Write some application of optical fibres.

The best quality optical fibres are made of :

Which is not an advantage of fiber-optic cable over copper cable?

Optical fiber mostly suited in single wavelength transmission in $\mathrm{O}-$band is?

Optical fiber cables are highly immune to $\mathrm{EMI}$ because information is carried by-

An operating environment has many high-voltage devices. What would be the best medium of transmission?

An optical fibre is based on:

Write a note on optical fibre.

An optical signal (light ray) is incident from air at an angle $i$ with normal. If refractive index of core and cladding are, respectively, $n_1$ and $n_2$, then what should be the maximum value of $\sin \left(i\right)$ so that the ray gets total internally reflected at core-cladding interface? (The maximum value of $\sin \left(i\right)$ is called numerical aperture of the optical fibre.)

The main reason of attenuation in optical fibre is :

A transparent solid cylindrical rod has a refractive index of $\frac{2}{\sqrt{3}}$. It is surrounded by air. A light ray is incident at the midpoint of one end of the rod as shown in the figure. The incident angle $\theta$ for which the light ray grazes along the wall of the rod is

Advantages of optical fiber communications over two wire transmission line or co - axial cable transmission are

Assertion: Optical fibre has thin glass core coated by glass of small refractive index and is used to send light signals.

Reason: All the rays of light entering the fibre are totally reflected even at very small angles of incidence.

What is the refractive index of the fiber core?

A light beam entering an optical fiber makes an angle of $10°$ with the fiber core-fiber clad boundary surface. If the fiber core and clad refractive indices are $1.5$ and $1.49$ respectively, can this beam propagate along the fiber?