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Optical Fibers

Optical Fibers. Wayward Wednesday | Ms. Timan. Why Optical Fibers?. Applications of Optical Fibers. Telecommunications Internet. Why Optical Fibers?. Kingston to Kettering ≈ 5700km. Time for light to travel from Kingston to Kettering ≈ 0.028s.

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Optical Fibers

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  1. Optical Fibers Wayward Wednesday| Ms. Timan

  2. Why Optical Fibers? Applications of Optical Fibers • Telecommunications • Internet

  3. Why Optical Fibers? Kingston to Kettering ≈ 5700km Time for light to travel from Kingston to Kettering ≈ 0.028s Time for sound to travel through a tin can ‘telephone’ ≈ 36 minutes

  4. Why Optical Fibers? Applications of Optical Fibers • Telecommunications • Internet • General light delivery needs (eg. Ultrafast lab at Queen’s) • As a tiny ‘flashlight’: Endoscope • Good times in the 90’s

  5. How do Optical Fibers Work? Two parts of a optical fiber:

  6. How Optical Fibers Work Total Internal Reflection

  7. Ray Optics of Optical Fibers Fiber Experiment • Core made of water (n1≈ 1.3) • Cladding made of air (n2≈ 1.0) Critical angle ≈ 40o Acceptance angle ≈ 61o Image taken from [8]. Daniel Colladon. La Nature, 1884.

  8. Limitations on Optical Fibers Pulse Dispersion: Multimode step-index fiber

  9. Limitations on Optical Fibers Pulse Dispersion: Multimode step-index fiber t This limits the bit/s which can be transmitted in the optic fiber

  10. How do Optical Fibers Work? Types of Fibers:

  11. Solving Linear Systems Graphically (continued) Wednesday, April 23rd

  12. Given the following function: y = 3x • 3 • 0 • Infinity/not defined • ⅓ What is this line’s y-intercept?

  13. Given the following function: y = 3x • 3 • 0 • Infinity/not defined • ⅓ What is this line’s y-intercept?

  14. Given the following function: y = 3x • 3 • 0 • Infinity/not defined • ⅓ What is the slope of this line?

  15. Given the following function: y = 3x • 3 • 0 • Infinity/not defined • ⅓ What is the slope of this line?

  16. Given the following function: y = 5 • 3 • 0 • Infinity/not defined • ⅓ What is the slope of this line?

  17. Given the following function: y = 5 • 3 • 0 • Infinity/not defined • ⅓ What is the slope of this line?

  18. Given the following function: x = 5 • 3 • 0 • Infinity/not defined • ⅓ What is the slope of this line?

  19. Given the following function: x = 5 • 3 • 0 • Infinity/not defined • ⅓ What is the slope of this line?

  20. There are three kinds of linear equations: • Intersecting – has one solution Different slopes 2) Parallel – has no solutions Same slope, different intercepts 3) Coincident – has infinite solutions Same slope, same intercepts

  21. Consider the two lines: y = ¾x + 2 y = 4x – 2 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  22. Consider the two lines: y = ¾x + 2 y = 4x – 2 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  23. Consider the two lines: y = ¾x + 2 y = ¾x + 1 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  24. Consider the two lines: y = ¾x + 2 y = ¾x + 1 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  25. Consider the two lines: y = 2x + 1 y – 2x + 5 = 0 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  26. Consider the two lines: y = 2x + 1 y – 2x + 5 = 0 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  27. Consider the two lines: y = x + 2 y + x + 2 = 0 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  28. Consider the two lines: y = x + 2 y + x + 2 = 0 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  29. Consider the two lines: y = ½x + 3 2y – x = 6 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  30. Consider the two lines: y = ½x + 3 2y – x = 6 • They will intersect once • They will intersection twice • They will not intersect • They will intersect an infinite number of times How many intersections will these lines have with each other?

  31. Graph these two lines and find their intersection point: y = ¼x Team 1 Jill Ada Allison Vanessa Rachel Melissa y = –½ x + 3

  32. Graph these two lines and find their intersection point: y = 2x - 3 Team 2 Alex Adrian Calvin Sam Ainsley Chelsea y = –x – 1

  33. Graph these two lines and find their intersection point: y = 3x – 4 Team 3 Ben Seth Victoria Abby Josh y = ½x + 1

  34. Graph these two lines and find their intersection point: y = x + 3 Team 4 Kate Katie Codey Matthew Shirley y = –½x

  35. Intersections Worksheet (you may use your team) Practice

  36. That’s it folks! We are done our lines unit! Unit test: Wednesday, April 30th

  37. Speed Review Time!Conceptual Review Handout

  38. Page 446 #1 – 21 Homework

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