Patents by Inventor Christopher E. Falt

Christopher E. Falt 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).

  • Optical phase-modulating devices and methods for their operation
    Patent number: 5363457
    Abstract: A semiconductor-based optical phase-modulating device has first and second pairs of phase-fixing electrodes bracketing a pair of phase-modulating electrodes. The phase-fixing electrodes fix electric fields across end regions of the phase-modulating device to reduce distributed resistance and capacitance of the phase-modulating device, thereby improving the frequency response of the phase-modulating device. The optical phase-modulating device is particularly applicable to use in integrated optic Mach-Zehnder interferometers used for optical signal modulation.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: November 8, 1994
    Assignee: Northern Telecom Limited
    Inventors: Christopher E. Falt, Bruce A. Richardson, Claude Rolland