To properly send data over fiber cable, a link’s transmit signal (Tx) at one end of the cable must match the corresponding receiver (Rx) at the other end. And the role of polarity, which defines the direction that the signal travels, is to make sure that this correspondence is maintained. Fiber polarity is one area that seems to cause a lot of confusion in our industry – especially when it comes to multifiber MPO solutions used in parallel optic applications.
