the present invention provides an optical modulator module comprising : a chip carrier ; a semiconductor optical modulator for modulating light based on an electronic signal ; a strip conductor electrically connected to the semiconductor optical modulator ; a first resistor electrically connected to the semiconductor optical modulator ; and a second resistor electrically connected in series to the first resistor ; wherein the semiconductor optical modulator , the strip conductor , and the first and second resistors are disposed on the chip carrier ; and wherein the frequency characteristics of the optical modulator module is adjusted by selecting to short or not to short both ends of the first resistor by use of a wire as necessary .