Fortunately, techniques have been developed that help compensate for the negative effects of chromatic dispersion. One method involves pre-compensating the signal for the anticipated dispersion before it's sent down the optical fiber. Another method calls for using dispersion compensating fiber at the end of a length to correct or reverse the dispersion that was realized as the signal traversed the optical fiber. As a result, these techniques are widely used to help solve the problem of chromatic dispersion.