| 摘要 |
PURPOSE:To make possible a reduction in a power consumption and to make it possible to inhibit the generation of heat in an optical integrated device by a method wherein a laser diode, a light branch path and optical modulators are integrated on the same substrate, one laser beam is branched into several beams and an individual modulation is conducted on each output light. CONSTITUTION:A constant DC voltage is applied to a laser diode 10. A light output beam from the diode 10 is incident on a Y branch optical waveguide 11, is branched into two first and second non-modulation output beams 2 and 3 and moreover, the first and second output beams 12 and 13 are respectively incident on MQW optical modulators 14 and 15 and are modulated individually. Modulated light output beams 16 and ..7 are respectively incident on individual optical fibers 6 and 7 and are transferred. As a result, the generation of a large quantity of heat, which is caused by making to flow an operating current through a multitude of elements, is inhibited. Thereby, the generation of heat per one signal in an optical wiring is inhibited and a power consumption can be reduced. |
