To put it another way , the signal will take 5 milliseconds to travel 1,000 kilometers in fiber .
From this information , a simple rule of thumb is that a signal using optical fiber for communication will travel at around 200,000 kilometers per second .
To put fiber another way , the signal will take 5 milliseconds to travel 1,000 kilometers in fiber .
From this information , a simple rule of thumb is that a signal using optical fiber for communication will travel at around 200,000 kilometers per second .