Patents Assigned to E-Tek Dynamics, Inc.
  • Optical isolator
    Patent number: 5208876
    Abstract: An improved optical isolator of the type having an input optical fiber, a first GRIN lens, a first polarizer, a optical rotator, a second polarizer, a second GRIN lens and an output optical fiber. Lithium niobate birefringent crystals are used for lowered costs and high performance. Improvements also include polishing the end of the input optical fiber at a slant and covering the end with a window coated with antireflection material. The surface of the GRIN lens facing the end of the input optical fiber is slant-polished reciprocally and spaced apart with gap which avoids Fabry-Perot interference.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 4, 1993
    Assignee: E-Tek Dynamics, Inc.
    Inventor: Jing-Jong Pan
  • Fiber optic coupler and method of making same
    Patent number: 5117473
    Abstract: A low-cost, high performance 1.times.N fiber optic coupler where N>16 is presented. The coupler has a GRIN lens having an first optic fiber aligned with the optical axis of the lens at one end of the lens. The first optic fiber ends in a microlens. At the other end of the GRIN lens a bundle of tapered second optic fibers is centered on the optical axis of the lens.
    Type: Grant
    Filed: January 11, 1991
    Date of Patent: May 26, 1992
    Assignee: E-Tek Dynamics, Inc.
    Inventor: Jing-Jong Pan
  • Fiber optic coupler and method of making same
    Patent number: 5016963
    Abstract: A low-cost, high performance 1.times.N fiber optic coupler where N>16 is presented. The coupler has a GRIN lens having an first optic fiber aligned with the optical axis of the lens at one end of the lens. The first optic fiber ends in a microlens. At the other end of the GRIN lens a bundle of tapered second optic fibers is centered on the optical axis of the lens.
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: May 21, 1991
    Assignee: E-Tek Dynamics, Inc.
    Inventor: Jing-Jong Pan