Hello to All, i got some results of optical ring resonator from Lumerical FDTD Soln software. My question is how can one distinguish between TM and TE mode by simply visualizing its intensity graph?
Dear Gaurav Kumar Bharti ,
Polarization of waves is a characteristic of transverse waves describing the behavior of the vector of an oscillating quantity in a plane perpendicular to the direction of propagation of the wave.
In a longitudinal wave, polarization can not arise, since the direction of oscillations in waves of this type always coincides with the direction of propagation.
The transverse wave is characterized by two directions: the wave vector and the amplitude vector, always perpendicular to the wave vector. The wave vector indicates the propagation direction of the wave, and the polarization vector represents the electric field strength vector. So in three-dimensional space there is one more degree of freedom - rotation around the wave vector.
The cause of wave polarization can be:
asymmetric wave generation in the disturbance source;
anisotropy of the wave propagation medium;
refraction and reflection on the boundary of two media.
The dependence of the instantaneous potentials with circular polarization
In the general case for harmonic waves, the end of the oscillating vector describes, in a plane transverse to the direction of propagation of the wave, an ellipse: this is an elliptical polarization. Important special cases are linear polarization, in which perturbation oscillations occur in a single plane, in which case they speak of a "plane-polarized wave," and circular or circular polarization, at which the end of the amplitude vector describes a circle in the plane of vibrations; The circular polarization (as well as the elliptic), depending on the direction of rotation of the vector, can be right or left.
Regards, Shafagat
Thanks shafagat.... but I am more concern about TE and TM mode visualisation in Lumerical FDTD solution
But Mr. Ali Sir, will you kindly elaborate your point number 1. How one can see interaction and compare them?
Ali Farmani Dear Sir,
In lumerical FDTD, in TE and TM mode of light which one is X- and Which one is Y- polarized light ? Can you please help me to solve my concept ?
Regards,
Subrat Sahu
There no such X and Y polarization of light, better to say TE or TM.
TE or TM can be estimated by the intensity graph in the lumerical.
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