PROBLEM TO BE SOLVED: To provide a semiconductor optical amplification device, a semiconductor optical amplification driving device, and a semiconductor optical receiving device capable of reducing power consumption, receiving an optical signal suffering a transmission loss, and amplifying an optical signal and reducing the bit error rate thereof.;SOLUTION: The semiconductor optical amplification device 1 comprises an active layer 2, an n-type InP substrate 9, an n-type InP clad layer 12, a p-type InP clad layer 13, p electrodes 21-23, and n electrodes 27-29. The active layer 2 is composed of e.g. InGaAsP and includes a saturable absorption region 4 and optical amplification regions 5, 6. common modulation currents are injected into the optical amplification regions 5, 6 via the p electrodes 22, 23, respectively. A modulation current is injected into the saturable absorption region 4 via the p electrode 21 independently of the optical amplification regions 5, 6. The active layer 2 receives injected light Pin which is an external optical signal on which additional noise light is applied, and emits output light Pout which is amplified injected light Pin.;COPYRIGHT: (C)2006,JPO&NCIPI
展开▼
