Using Light for Communication Kristy KallbackRose Danko Antolovic

Using Light for Communication Kristy Kallback-Rose Danko Antolovic

Are there different kinds of light? Sunlight Single Color Light LED Light Laser Light UV Light Visible Light …Lots of different types of light…

How is sunlight different from Laser Light? Sunlight Laser Light Naturally-Occurring Human-created Mixture One of lots of wavelengths (colors) Waves not in sync and spreads out in all directions (wide) Monochromatic wavelength (color) Coherent Waves in sync, and traveling same direction (narrow) Collimated

What can we do with laser light? Reflect it Refract it

Half Moon Experiment Undirected Direction via the worksheet

Total Internal Reflection With the laser pointer at a certain angle, called the critical angle, we can reflect all of the light and not lose any of it to refraction. http: //www. youtube. com/watch? v=Bl 56 Cc. Lkzz c http: //www. physicsclassroom. com/class/refrn/u 14 l 3 b. cfm

Making Light Bend Polycarbonate Tube 2 -liter bottle with water

Who’s heard of Fiber Optics? What is optical fiber? Optical What’s Acts Fiber = flexible, transparent made of glass optical fiber for? like a “light pipe”* to transmit light * Wikipedia: http: //en. wikipedia. org/wiki/Optical_fiber

What can you do with the transmitted light? Transmit This data over long distances quickly is called Fiber-optics communication Information could be voice, TV, computer data, etc.

Sending Data via Laser Light Transmitter Receiver