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jsheehan1-Visitor
1-Visitor
May 28, 2014
Question

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

  • May 28, 2014
  • 2 replies
  • 2113 views

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.

2 replies

R
RichardJ19-Tanzanite
19-Tanzanite
May 28, 2014

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

J
jsheehan1-VisitorAuthor
1-Visitor
May 28, 2014

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.

R
RichardJ19-Tanzanite
19-Tanzanite
May 28, 2014

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.

V
VladimirN24-Ruby III
24-Ruby III
May 29, 2014

Hi John,

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

J
jsheehan1-VisitorAuthor
1-Visitor
May 29, 2014

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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