Photonics Terminology Explain the following terms in one or two sentences: (a) T
ID: 3279399 • Letter: P
Question
Photonics Terminology Explain the following terms in one or two sentences: (a) Total internal reflection (b) Polarization (c) Wave vector k (d) Waveguide mode (e) Dispersion relation Maxwell's wave equation and plane waves Consider a traveling sinusoidal wave of the form E_x = E_o cos(omega t - kz + phi_0). The latter can also be written as E_x = E_o cos[k(Vt - z) + phi_0], where V = omega/k is the velocity. Show that this wave satisfies Maxwell's wave equation, and show that V = (mu_0 epsilon_0 epsilon_r)^-1/2. Here, Maxwell's wave equation is partial differential^2 E/partial differential x^2 + partial differential^2 E/partial differential y^2 + partial differential^2 E/partial differential z^2 - epsilon_0 epsilon_r mu_0 partial differential^2 E/partial differential t^2 = 0Explanation / Answer
In one or two sentences these terms can be explained as below.
#TOTAL INTERNAL REFLECTION- At greater than some critical angle, when a light ray or wave travelling in one medium strikes with another medium of lower refractive index it reflect totally and cannot pass the medium, then it is called total internal reflection.
#POLARIZATION- Generally the light waves vibrate in all possible directions but the waves which only vibrate in a single plane are called polarized light. The process of converting unpolarized light into polarized light is called polarization.
#WAVE VECTOR K- Wave vector k describes the wave . Its magnitude is sending as the ratio of 2pi to wavelength of wave in that medium in which the wave is travelling.
#WAVEGUIDE MODE- The electromagnetic wave containing electric and magnetic fields perpendicular to each other. Waveguide mode describes if the direction of propagation of wave is along the electric field or along the magnetic field of that wave or in any other direction.