Patents by Inventor Joel C. Masland

Joel C. Masland 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).

  • Isolated optical coupler
    Patent number: 5082343
    Abstract: An isolated optical coupler arrangement is disclosed which is capable of providing a pump signal and a message signal to a fiber amplifier. The coupler comprises a pair of lenses with a wavelength selective device disposed therebetween. The wavelength selective device is chosen to reflect the pump signal applied as an input to the first lens, and transmit the applied message signal. An optical isolator is inserted in optical path between the wavelength selective device and the second lens to further improve the performance of the coupler.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: January 21, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: David G. Coult, Joel C. Masland, Michele A. Milbrodt