The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 1995
Filed:
Jan. 15, 1993
Applicant:
Inventors:
Hisao Nakajima, Bagneux, FR;
Radhouane Derouiche, Paris, FR;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359152 ; 359182 ; 372 45 ; 372 96 ;
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.