×

Adjustable directional coupler for light waveguides

  • US 4,302,071 A
  • Filed: 11/23/1979
  • Issued: 11/24/1981
  • Est. Priority Date: 12/13/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. A directional coupler for the coupling of a light signal traveling in a light conducting core of one light waveguide to the light conducting core of a second light waveguide with an adjustable ratio of the amount of coupling therebetween, said coupler comprising a pair of support members for mounting each waveguide in a fixed position along a coupling segment, each of the support members having a plane parallel surface facing each other, each of said plane parallel surfaces having means for receiving and holding the waveguide with the waveguides being substantially parallel in the coupling segment and the waveguides being embedded in a medium with an index of refraction which is lower in comparison to the index of refraction of the cores of the waveguides, each of said support members being mounted for relative movement to each other from a first position with the waveguides in alignment with each other to a second position with the waveguides separated and displaced from each other, and means for moving the support members between said position in prescribed amounts to change the ratio of the light signal coupled from one waveguide into the other waveguide so that when said support members are in said first position, said waveguides are in alignment with each other with the core close together and the plane parallel surfaces are substantially abutting each other.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×