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How to model a Angle Cleaved (APC) fiber showing output ray


  • Ultraviolet
  • 30 replies

Hello. I am trying to model a Angle Cleaved fiber source that emits beam. I would like to show the exit beam is offset at 4° from the optical fiber mechanical axis. How can I model this in SEQ mode?  Essentially, I want to model something like shown below in Zemax Sequential mode.
PS: I am referencing this KB article to model a Angle Cleaved fiber on the receiving side.

 

Best answer by Jeff.Wilde

I like to use the Tilted surface:

 

By making the object surface thickness very small, say ~1 um or less, you can simulate an angled-facet fiber source:

 

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Jeff.Wilde
Luminary
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  • Luminary
  • 509 replies
  • Answer
  • April 30, 2025

I like to use the Tilted surface:

 

By making the object surface thickness very small, say ~1 um or less, you can simulate an angled-facet fiber source:

 


  • Author
  • Ultraviolet
  • 30 replies
  • June 18, 2025

@Jeff.Wilde  Thanks Jeff. That made it very clear.

PS: I have a follow up question on how to pivot Surf0 and Surf1 as a single entity (such as a lens) at an arbitrary point in Z so that the exit ray from Surf2 is 0°. I imagine using READ operand but I am not clear on how to pivot first 2 surfaces. I will post this as a new question on the forum. 


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