Optical Fiber

https://en.wikipedia.org/wiki/Fiber-optic_cable There’s like a bunch of mirrors inside the cable?

Allows transmission of information over long distances using light

Use those to send information. An optical fiber is a thin, flexible medium that conducts pulses of light, with each pulse representing a bit. A single optical fiber can support tremendous bit rates, up to tens or even hundreds of gigabits per second.

Characterics:

• Immune to Electromagnetic Interference
• Have very low signal attenuation up to 100 kilometers
• Are very hard to tap

Oversea links

These characteristics have made fiber optics the preferred long-haul guided transmission media, particularly for overseas links.

Many of the long-distance telephone networks in the United States and elsewhere now use fiber optics exclusively.

Fiber optics is also prevalent in the backbone of the Internet.

Cool

• How The Internet Travels Across Oceans by Tech Vision (talks a little about the politics)
• The Undersea Cable That Linked The World by Bloomberg Originals