A light intensity modulator, 1984, in optics integrated and analog converter, 1984, comprising such a modulator

摘要

P the invention relates to a light intensity modulator controlled by a word of n bits, and an analog converter numerically opto - electronique. / p & & p & the modulator comprises a interferometer has two arms in the length of which it creates, by electro - optic, the successive commands phase shifts respectively by the control bits and whose values are, when the bits of commands are at state 1, according to the successive powers of 2. The total phase shift obtained is thus directly a function of the analog value of the control word and the national emergent is modulated as a function of this word. There is obtained a converter, 1984, - analog by adding means photodetector the output voltage of which is a function of the analog value of the control word. / p & & p & the invention applies in particular to the optical telecommunications. / p