Muhamed A. Sewidan

13 Questions 19 Answers 0 Followers

Questions related from Muhamed A. Sewidan

Can optical fiber guide a light of wavelength longer than the working wavelength of the fiber?

Hello, I wanted to know if a lensed fiber can guide a light of wavelength (1550 nm) longer than the working wavelength of the fiber (780 nm). Thanks.

07 January 2023 5,453 7 View

Are there any easy resources for studying nonlinear optics?

Hello, I wanted to enrich my knowledge about nonlinear optics and quantum technologies. Are there any resources to study them? Thank you.

29 June 2022 9,194 8 View

Any recomeendations for spectrometers?

Hello all, I want some recommendations for spectrometers of UV to near IR (230 nm to 900 nm), with High resolution, have a good price, can distinguish between second and third harmonic, and are...

18 May 2022 4,611 2 View

What are the best optical modeling software for calculating absorption, transmission and propagatin of light?

Hello all, Could you please recommend me optical modeling software programs for modeling absorption, transmission, and propagation of light? Thank you.

25 November 2021 3,784 6 View

What is the right distance of boundary condition in Lumerical mode when modeling photonic crystal fiber?

Hi, By changing the position of the boundary condition from the center of the photonic crystal fiber, I get different outputs with every position. What is the optimum position for the BC?

09 July 2021 5,744 3 View

How can I plot the transmission spectra of photonic crystal fiber using Lumerical?

Hello I'm trying to find a way to plot the transmission spectra of different analytes in photonic crystal fiber using Lumerical but I don't know how to do it. Can any one help me? Thanks.

21 June 2021 989 3 View

Is there any simple software to calculate the bandstructure of photonic crystals?

I want to calculate the bandstructure of photonic crystals structures. Is there any free and simple software?

07 March 2021 5,760 4 View

In a holly-core fiber, should the effective index of the fundamental mode be higher or lower than the core refractive index(n=1)?

Hi, I was wondering in hollow-core fibres should the effective index of the fundamental mode be higher or less than the core's refractive index (in this case, n = 1 because the core is filled...

18 January 2021 2,474 3 View

Is there any one who can help me in reconstructing CT images using matlab?

I'm a little beginner in the CT scan. I have a set of 90 images for a fibre. These images are captured for every 2 degrees around a rotating axis. I can't figure out how to reconstruct them using...

12 October 2019 2,522 4 View

Can a research paper be sent to two journals at the same time, just to save time in case one of the two rejects the paper?

Most of the academic journals take so long just to review the research paper, and most of the times they reject the paper. I was wondering if any researcher can send his paper to two journals,...

19 July 2019 4,614 9 View

Can any body Suggest me a set up that I can build it up to study the surface roughness of transparent polymeric fibres?

I need to study the surface of nylon-6 blank fibres with a thickness of nearly 40 micrometre, I work in optics lab with many optical components such as beam splitters, lenses, mirrors ... etc, can...

19 March 2019 496 3 View

I'm new to the profilometry, I need to know if I can build up and design a profilometer with my own components?

Hello ! I need to study the surface of certain polymeric fibre, I need to know if I can design my own system?

19 March 2019 566 4 View

Which is better for scientific graphing; origin or plotly ?

I'm using originpro for my data graphing, however i'm wondering if plotly can make better graphs than origin.

16 December 2018 8,196 4 View