Patents Assigned to IFOS
  • Fiber-optic mode-routed add-drop filter
    Patent number: 5940556
    Abstract: New elements mode-converting two-mode grating and mode-filtering two-mode coupler are disclosed and used as elements in a system for communications, add-drop filtering, and strain sensing. Methods of fabrication for these new two-mode gratings and mode-filtering two-mode couplers are also disclosed.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: August 17, 1999
    Assignee: IFOS
    Inventors: Behzad Moslehi, Richard James Black, Herbert John Shaw