Uzair Majeed

4 Questions 8 Answers 0 Followers

Questions related from Uzair Majeed

Surface roughness in the planar optical waveguide induced propagation losses, any min or max limit for surface roughess to reduce propagation losses?

I am working on SiO2/Si3N4/SiO2 planar waveguide structure and characterized the Si3N4 (core layer, deposited at different sputtering powers)through AFM for RMS surface roughness. (in range of...

03 May 2024 1,399 0 View

If the polarization of optical source neither TE nor TM, but the polarization azimuth is 45° relative to wave-guide surface, which mode is excited?

As far as I know, the light propagation in planar waveguides in specific modes which is either TE or TM. For TE/TM modes excitation, the optical source must be either TE polarized or TM...

28 October 2014 2,092 8 View

In our lab, there are two silicon nitride sputtering targets.the color is different; One is white and one is greyish black. Can anyone please explain?

We have two different sputtering targets for Si3N4 deposition in the magnetron sputtering lab. One is white and other is greyish black. Both are tagged as 99.99% purity. Can anyone please explain...

27 October 2014 3,357 9 View

How can I confirm whether my line laser is TE polarized or TM polarized?

Hi, I am working on a planar optical wave guide. I have a laser (He-Ne, 635 nm) and I need to excite the TE mode of a planar wave guide. How can I determine if my laser is in TE mode or TM mode? I...

23 October 2014 7,380 4 View