Hello! I’m curious if anybody can recommend strategies for modeling coupling efficiencies of sources with angular dependences into multimode fiber. Ideally this would work in sequential mode. Thank you in advance!
Best answer by Csilla Timar-Fulep
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Hello
Thanks for your question here on the Community Forums!
In sequential mode, you can take advantage of the Geometric Image Analysis feature to compute multi-mode fiber coupling efficiency. This is discussed in detail in this knowledgebase article:
How to model multi-mode fiber coupling – Knowledgebase (zemax.com)
However, the source modeling capabilities are limited in sequential mode compared to the different source types available in NSC mode. For your reference, you may find a detailed discussion about the available source models in NSC here:
Light sources used in illumination design – Knowledgebase (zemax.com)
Then, the basic idea would be to calculate coupling efficiency as a ratio between the number of incident ray in a given NA at the fiber and the total number of launched ray.
Best,
Csilla
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