Optical semiconductor device with resonant cavity tunable in wavelength, application to modulation of light intensity

摘要

Optical semiconductor device with resonant cavity tunable in wavelength, application to modulation of light intensity.This device comprises a resonant cavity (2) delimited by two mirrors (4, 6) and at least one super-lattice (14) that is placed in the cavity and is formed from piezoelectric semiconducting layers, and means (20) of injecting charge carriers into the super-lattice. The optical properties of this super-lattice can thus be modified and the wavelength of cavity resonance modes can be offset. The invention is particularly applicable to optical telecommunications.