Think about it, wavelength (or frequency, they're effectively the same measurement here) determines how fast you can transmit those 1's and 0's. It's not slower

Think about it, wavelength (or frequency, they're effectively the same measurement here) determines how fast you can transmit those 1's and 0's. It's not slower, it's just that you can't transmit as much information in the same time period. Also, laser light for Telecoms is not normally Visible, it's usually Infrared which has a wavelength shorter than Microwave radio but longer than visible light. Another bonus fact; in a vacuum, Radio and Light waves travel at the same speed. However, when light travels down an optical fibre it is slowed down by the glass so Fibre Internet is actually slightly slower than radio.