Recent content by Lee

I've solved the problem in 1-D but it's a 2-D problem, which I tried to solve myself but the results just don't look right, the post-doc and prof both don't think it's quite right, but can't say how.

Does anyone know of any software I could use to look at thermal dispersion in silica? It is to basically see how far I can place a heater from a region until the active region no longer feels the effects of the heater.

Thanks buddy, I finally got round to creating the graph I wanted and I'm really happy with it, and it looks like it agrees with my results (though I would of liked to create more samples or test the 540nm layer of silica). http://img440.imageshack.us/img440/9472/awesomenesscs8.jpg Do you...

Excellent Claude, thanks very much for the input. So now I have worked out the propagation constant where does that then go in my exponent function? Between talking to my adviser and reading literature on line I'm now rather confused...

I had a bash using Maxwell's equations and BCs, and I'm down to making the wave function continues at the boundaries. So I've got down to a set of equations that need to be equal for which I now have to solve. Though I'm currently normalizing my wave function to get terms for my Constants.

So I can simply apply the equation to the cladding and be able to come out with the negative exponential function for the light in the cladding, and from that work out the penetration at different distances?

So the waveguide is rectangular, and my only concern is the penetration in one dimension, so would I be able to discount the other dimensions and solve in 1-D making the problem much simpler? Making this very similar to a 1st year Schroedinger equation particle in a box?

anyone?

Feel free to throw it wherever.

As part of my project I want to calculate the theoretical value of the best thickness of cladding to use on my waveguide to prevent light from leaking through the cladding to the next layer, I'm aware I need to play with Maxwells equations and it's pretty much particle in the box where I'll have...

That's very interesting. Will the broadening within the spectrum of the everyday LED also be caused by the coupling between the intensity and phase?

Yeah, with a LED laser you sheer each side so they have some sort of reflectivity, creating your cavity, and rather conveniently the depletion region has a different refractive index from the rest of the material creating a waveguide (for small angles) which helps to confine the light to the...

Why is it that LEDs do not sharper spectra? I've been considering this recently, and was wondering if it was due to the uncertainty principle (like homogeneous broadening in a laser) or is it due to a fluctuating band gap? I've searched high and low and can't find any explanation for the...

Thanks for the references, however I need something more basic, more textbook.

Basically, I have a project involving thermally tunable photonic crystals and part of the essay in the run up to the experiment work I want to write a bit on the thermo optical effect, but I have searched in vain for a resource for this. Can anyone suggest a textbook or something online? Thanks.