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ALIGNMENT FERRULE ASSEMBLIES AND CONNECTORS FOR EVANESCENT OPTICAL COUPLERS AND EVANESCENT OPTICAL COUPLERS USING SAME

  • US 20200132934A1
  • Filed: 10/31/2018
  • Published: 04/30/2020
  • Est. Priority Date: 10/31/2018
  • Status: Active Grant
First Claim
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1. An optical interconnection device for establishing evanescent optical coupling between optical fibers and optical waveguides of a photonic lightwave circuit (PLC), comprising:

  • a) an alignment ferrule assembly comprising;

    i) an alignment substrate having a front-end section with a front end, a top surface, a bottom surface and a substrate central axis;

    ii) an array of optical fibers, with each optical fiber having a fiber central axis and an end section with a glass portion defined by glass core, a glass inner cladding and a glass-portion surface that resides immediately adjacent the glass core, and wherein the end sections of the optical fibers are secured to the bottom surface of the alignment substrate with the glass-portion surfaces facing away from the bottom surface of the alignment substrate and with the fiber central axes aligned with the substrate central axis; and

    b) an alignment assembly comprising;

    a planar support member having a back-end section with a back end, a top surface and a bottom surface;

    first and second spaced-apart guide-feature support members that downwardly depend from the bottom surface of the planar support member and that respectively support first guide features; and

    a receiving region between the first and second guide features in which the alignment substrate of the alignment ferrule assembly is secured.

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