| 摘要 |
PURPOSE:To provide the structure of light transmission/reception equipment without deteriorating a quenching rate and reception sensitivity, etc., and with superior high frequency characteristic made into small capacity in the optical/ electronic interface of fast light transmission equipment. CONSTITUTION:A serial waveguide type light modulation element 1 is formed in structure to divide electrodes 3-6 on an optical waveguide and to draw them out to one side, and is flip-chip packaged on a sub mount 17 provided with wiring resistors 13-16 by Au/Sn soldering. Also, electric driving circuits 7-10 is formed in a monolithic IC adjusted by phase lock, and is flip-chip packaged on the same substrate and is formed in structure without generating the delay of a signal to the optical waveguide. Input light 11 is modulated by the electric driving circuits 7-10, however, such structure that the quenching rate can be improved by extending effective optical waveguide length and the high frequency characteristic can be improved by making the electrode into small capacity is employed. |
