Fiber-optic encoding

摘要

I am telecomm design engineer who works on digital systems. I'm curious about the transmission of digital sig-nals using fiber-optic transceivers. What data coding should I use, and why? What is the preferred logic standard for the interface to the optics module?―Namita, Bangalore, India For high-speed optical links, I recommend you select a code with good dc balance. Averaged over every span of length N, a de-balanced code has near-equal numbers of ones and zeros. The value of N and the degree of balance that you obtain vary with the coding.