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A comment on A Gazillion-Dollar Standoff over Two High-Frequency Trading Towers. Parent comment

Re:A Gazillion-Dollar Standoff over Two High-Frequency Tradi... by packet_nerd on Sunday March 10, 2019 @06:26PM (#19355050)
> light bounces off the walls of the fibre optics cable

This is true of multimode fibre, but not single mode. Long haul communications cables are single mode.

https://en.wikipedia.org/wiki/Single-mode_optical_fiber

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Re:A Gazillion-Dollar Standoff over Two High-Frequency Tradi... by Denvercoder9 on Sunday March 10, 2019 @07:37PM (#19355480)
Even for multimode fiber it's a huge simplification of the actual physics. The actual cause of the speed difference, for both single and multimode fibers, is the index of refraction of glass.
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