Divergence feedback in a linear fiber optic analog transmission system and method

摘要

A method and apparatus for improving the linearity of an analog signal in a fiber optic transmission system in which copies of the analog signal are provided to a remote receiver and to a feedback receiver, and in which the copy to the feedback receiver is attenuated so that the signal received at the feedback receiver is substantially similar to the signal received at the remoter receiver. An amplifier subtractively combines the signal from the feedback receiver and the analog signal to thereby provide a signal that pre-compensates for non-linearities that would be encountered by a transmission through the system. The feedback receiver and the remote receiver are substantially similar in operation so that the feedback loop substantially duplicates the environment of the transmission.