Meridional ray

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Across
  1. 3. light within the fiber
  2. 5. of light along the fiber
  3. 6. that keeps light inside the core
  4. 10. the central axis of the fiber
  5. 11. light propagation path in fiber
  6. 13. angle for light acceptance
  7. 15. striking the interface
  8. 16. of light at interface between media
Down
  1. 1. traveling path in the fiber
  2. 2. a set of one-word answers related to Meridional Rays for a crossword, along with short clues:
  3. 4. of ray relative to axis
  4. 7. surface containing the fiber axis
  5. 8. part of the fiber where light propagates
  6. 9. that light effectively follows
  7. 12. layer surrounding the core
  8. 14. you want, I can combine all previous sets (Refractive Index + Mode Coupling + Meridional Rays) into a large crossword word list, optimized for intersection. Do you want me to do that?
  9. 16. of light at core-cladding interface