6A44.40 Laser and Fibre Optics
Concepts
Total internal reflection, rays
Overview
Light from a flashlight or laser pointer undergoes total internal reflection inside optical fibres and light pipes.
Details
Equipment
- [1] Red laser pointer
- [1] Fibre optic cable
- [1] Fibre optic plant
- [1] Fibre optic bundle
- [1] Set of light pipes
Classroom Assembly
- Put fibre optic plant on base.
Important Notes
- Lasers can cause blindness. Use with caution.
Script
- Shine flashlight through various items.
- Shine laser pointer through various items to illustrate paths of light rays.
Additional Resources
References
- PIRA 6A44.40
Disclaimer
- Don't attempt this at home!
Last revised
- 2024
Technicals
- Original construction: purchased. The straight and S-curve light pipes were made by Uchida Yoko Co. Ltd., model DP-23, cat no. 125-5601. Looks like Arbor Scientific sells something like this.
- The 5 mW plug-in green laser works for this, though the beam is a bit broad.
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If you have any questions about the demos or notes you would like to add to this page, contact Ricky Chu at ricky_chu AT sfu DOT ca.