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Apparatus for millimeter-wave signal generation

United States Patent

5,998,781
December 7, 1999
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
An opto-electronic integrated circuit (OEIC) apparatus is disclosed for generating an electrical signal at a frequency .gtoreq.10 GHz. The apparatus, formed on a single substrate, includes a semiconductor ring laser for generating a continuous train of mode-locked lasing pulses and a high-speed photodetector for detecting the train of lasing pulses and generating the electrical signal therefrom. Embodiments of the invention are disclosed with an active waveguide amplifier coupling the semiconductor ring laser and the high-speed photodetector. The invention has applications for use in OEICs and millimeter-wave monolithic integrated circuits (MMICs).
Vawter; G. Allen (Albuquerque, NM), Hietala; Vincent M. (Placitas, NM), Zolper; John C. (Albuquerque, NM), Mar; Alan (Albuquerque, NM), Hohimer; John P. (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
08/ 846,370
April 30, 1997
GOVERNMENT RIGHTS This invention was made with Government support under Contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.