| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical integrated device for reducing power consumption accompanied with an operation. SOLUTION: A light modulator 10 and a DFB laser 20 are electrically connected in parallel, and the rays of light outgoing from the DFB laser 20 are inputted to the light modulator 10 as incident rays of light Pin, and light-modulated outgoing rays of light Pout are outputted from the light modulator 10. A modulated electric signal Vd' is inputted to not only the light modulator 10 but also the DFB laser 20 so that the incident rays of light Pin can be light-modulated, and that the insufficiently modulated rays of light are light-modulated by the light modulator 10. Thus, it is possible to reduce the amplitude (voltage value) of the modulated electric signal Vd', and to reduce power consumption. COPYRIGHT: (C)2006,JPO&NCIPI |
