Patents by Inventor Radhouane Derouiche

Radhouane Derouiche has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Transmitter/receiver for frequency-modulated optical signals and optical link corresponding thereto
    Patent number: 5412496
    Abstract: A transmitter/receiver including a stack of semiconductor layers with an active layer 12 and a diffraction grating 16 with a phase shifter 18. A tapping electrode 30 is formed above the phase shifter in order to tap a voltage whose variations reflect the frequency modulation of a light beam propagating in the active layer. A bi-directional optical link is formed by connecting multiple transmitter/receivers according to the invention together via optical communication lines. The present invention finds particular application in the field of optical telecommunications.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: May 2, 1995
    Assignee: France Telecom Etablissement Autonome de Droit Public
    Inventors: Hisao Nakajima, Radhouane Derouiche