Linear analog optical transmitter having broadband based on schottky diode and predistorter included therein

摘要

An optical transmitter and a predistorter connected to a front end of the laser diode of the optical transmitter are disclosed. A predistorter according to an embodiment of the present invention includes a distributor for distributing an RF signal to a first path and a second path; A first diode block including a first Schottky diode and receiving a RF signal of the first path and outputting a first diode output signal in a linear form; A second diode block including a second Schottky diode and receiving a RF signal of the second path and outputting a nonlinear second diode output signal for compensating for nonlinearity of the laser diode; A second phase adjustment unit receiving the second diode output signal and outputting a second phase adjustment output signal whose phase of the second diode output signal is adjusted; And a coupling unit coupled to a front end of the laser diode and coupling the first diode output signal and the second phase adjustment output signal to output a compensation output signal.;