topic Re: does anyone have an optics example they can share which ... in Mathcad

does anyone have an optics example they can share which ...

jsheehan — Thu, 03 May 2018 16:13:02 GMT

We need to do an optical model that creates an exponential or linear taper based on cross sectional diameter over length. I was hoping that this would help with this, but I haven’t spent much time on it yet.

Re: does anyone have an optics example they can share which ...

RichardJ — Wed, 28 May 2014 18:38:47 GMT

It's not clear to me what you mean. Can you elaborate?

Re: does anyone have an optics example they can share which ...

jsheehan — Wed, 28 May 2014 18:45:51 GMT

I think he is looking for a beam to be shaped two ways:

1.) Linear with a starting shape (let's assume circular), and then shrink or grow over N stages.

2.) Starting shape will grow or shrink exponetially without going negative over N stages.

I'm picturing an array of circles changing size, eventually rendered as a blended surface.

I can ask him for more definition

Is this something Optical Engineers would find useful? I have seen hardware devices advertised to this with cables, when I google.

Re: does anyone have an optics example they can share which ...

RichardJ — Wed, 28 May 2014 22:46:20 GMT

Sorry, but I'm stilll confused.

First, is this a Mathcad question, or a Creo question? I ask because you mention that it would eventually be rendered.

Beams don't shrink or grow in stages, and they don't grow exponentially. A focused beam grows linearly, except near the focus if it's a Gaussian beam (i.e. a focused laser). Unless you mean as the beam passes through various optical components, but then although it does "grow" in stages, there is no set mathematical description of that growth.

I have seen hardware devices advertised to this with cables, when I google.

Could you point me to a couple of examples. I think that would help.

Re: does anyone have an optics example they can share which ...

jsheehan — Wed, 28 May 2014 22:49:15 GMT

Hey Richard,

I am waiting to hear back from the user. What I found on google could be completely wrong, so let's wait for more definition on the problem. Thanks

John

Re: does anyone have an optics example they can share which ...

VladimirN — Thu, 29 May 2014 06:29:24 GMT

Hi John,

Maybe that article "Theoretical, Numerical, and Experimental Analysis of Optical Fiber Tapering" in the attachment will be useful for you.

Re: does anyone have an optics example they can share which ...

jsheehan — Thu, 29 May 2014 09:59:31 GMT

Vladmir,

Thanks so much. After reading first page I believe the customer is looking to shape the fiber not a beam.Again, I will wait till he responds, but thanks for this. New homework assignment.

John