Patent ID: 8112004

Claim:
An optical receiver, comprising: a front end receiver that converts an input optical signal into a corresponding electrical signal; at least two electronic dispersion compensators having a same configuration to each other and including a transversal filter with a plurality of taps to reshape said electrical signal by adjusting a tap coefficient specified to respective taps, said electronic dispersion compensators each providing an output; a selector that select one of said outputs of said electronic dispersion compensator; and a controller configured to decide which outputs of said electronic dispersion compensators is selected by said selector, wherein each of said electronic dispersion compensator outputs a difference between an analog signal reshaped from said electrical signal and a digital signal discriminated from said analog signal, and wherein said controller selects another electronic dispersion compensator after said other electronic dispersion compensator reconfigures a set of said tap coefficients thereof when said difference of currently selected electronic dispersion compensator exceeds a preset level.