Patents by Inventor John Dennis Prohaska

John Dennis Prohaska 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).

  • Temperature compensated fiber grating and method for compensating temperature variation in fiber grating
    Patent number: 6240225
    Abstract: The present invention provides a temperature compensated optical device which is capable of compensating for the inherent temperature variations of the fiber grating. The temperature compensated optical device includes an optical fiber having a grating therein for reflecting light passing therethrough within a range about a central wavelength and a temperature compensating member affixed to the optical fiber proximate the grating. The temperature compensating member comprises an anisotropic material having a negative temperature expansion coefficient along at least one axis thereof. The optical fiber is aligned at a predetermined angle with respect to the axis to compensate a temperature variation. The invention is used in the field of fiber optic telecommunications.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: May 29, 2001
    Assignee: Lucent Technologies Inc.
    Inventor: John Dennis Prohaska