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jsheehan1-Visitor
1-Visitor
May 28, 2014 6:09 PM UTC
Question

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

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.

6 replies

RichardJ19-Tanzanite
19-Tanzanite
May 28, 2014 6:38 PM UTC

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

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jsheehan1-VisitorAuthor
1-Visitor
May 28, 2014 6:45 PM UTC

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.

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RichardJ19-Tanzanite
19-Tanzanite
May 28, 2014 10:46 PM UTC

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.

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VladimirN24-Ruby IV
24-Ruby IV
May 29, 2014 6:29 AM UTC

Hi John,

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

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jsheehan1-VisitorAuthor
1-Visitor
May 29, 2014 9:59 AM UTC

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

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