Recent content by eahaidar

I usually use MATLAB for any simulation. I went through the equations. With the help of a colleague, we managed to reduce the coupled equations to a single equation. I will update you on that once i get to the bottom of this equation which includes the 3 variables. Again thanks for your help...

Thanks for the response. However I get hyperbolic sinh which just makes it much worse. :(

Good afternoon, i was just wondering if this equation is possibly solvable where I(z) is a function of z. The equation is: I(z)=cosh(1/2 ∫I(z)dz) I know it looks stupid but is it possible? How would you approach this problem? Thank you.

Very interesting my friend. How did you get the plots? What program did you use? I know analytical stuff is hard but they come into handy. Another condition i found was that ISBS * I Stokes = CST if you divide equation 2 from 3. I am not sure how you got the curves to be honest. Is is just...

Yes it only relies on z. SBS stands for stimulated Brillouin scattering and so far yes the initial conditions are as you mentioned

Now i see your point. Drop the |A0|^2 since it is inside I0. Now what i claimed that first equation is the sum of second and third. SBS and Stokes should be propagate on the other side of the medium and therefore there are initially at z=L that means they are introduced at the end of the medium...

Thank you for your time. g is complex and I apologize for that. However, Im(g) is a constant number since it varies with another variable other than z. So let's say Im(g)= 0.5 What I meant from 1=2 +3 is that notice that d(I0) /dz = d( ISBS)/dz + d(I STOKES)/dz. As for your approach, I0...

Thank you for your time. The variables are [/0], [/STOKES], and [/SBS]. As for g, it is a real constant number despite having many variables. My attempt well: i only could find a relation between the 3 equations. Clearly equation 1 = 2 + 3 however other than the initial conditions of [/STOKES]...

Good evening I have these coupled equations and was wondering if there is any chance solving them analytically. If not, how would you approach it numerically? (shown in attachment) Thank you very much

I am working with four wave mixing and I really want to know how to simulate it using the split step Fourier theory That's why

I always thought it would help understand how one optical light wave will propagate My question is how solving this question problem by split step will show four wave mixing results which relies on more than one light wave ?how would it show the idler the signal Is there any work done on that ...

Just a question How does solving the nonlinear Schrödinger equation using split step Fourier method makes us understand the four wave mixing process in optical fiber ? Any examples on how that happens Thank you

%gamma=20; gamma=580; %P=0.1; P=0.75; N=P.*gamma; lamdazero=1550; [lamdapump,lamdasignal] = meshgrid(1550:0.1:1700,1550:0.1:1700); beta3=1.3; beta4=-8*10^-4; %beta3=0.06; %beta4=-2*10^-4; c=2*pi*3*10^8; %L=1; L=0.01; A0=(1./lamdapump) -(1./lamdazero); B0=(1./lamdapump) -(1./lamdasignal)...

Thank you very much for your time The second part is what I want where I want to highlight a specific region. I would love to ask some questions : 1-Can I add the color of the region to the color bar or not? 2- Can I change the steps of The numbers of the color bar instead of 10 20 30 I want...

Hello everyone If I have a plot of a function of two variables and I want the whole curve over the whole x and y intervals but in addition I want to highlight with a black colour a specific region when the function is between two values F between -8 and 0 or what ever How can I do that ...