A device for generating a modulation of an optical signal is provided which has a first electro-absorption modulator including a first P-doped semi-conductor area, a first N-doped semi-conductor area, and a first active portion, along with a second electro-absorption modulator including a second P-doped semi-conductor area in electric contact with the first N-doped semi-conductor area, a second N-doped semi-conductor area, and a second active portion, and a connector for introducing electric modulation. In the device, the connector for introducing electric modulation is in contact with the first N-doped semi-conductor area and the second P-doped semi-conductor area.