ACHROMATIC COUPLERS, ACHROMATIC VARIABLE RATIO COUPLERS, AND METHODS OF MAKING THE SAME

In one embodiment, a coupler includes a glass tube having a refractive index n3 and a passageway, a first optical waveguide and a second optical waveguide positioned within the passageway, each of the first optical waveguide and the second optical waveguide comprising a core surrounded by a cladding...

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Bibliographic Details
Main Authors Graham, SR., Jeremy Alexander, Weidman, David Lee, Gosai, Agnivo, Miller, William James, Zakharian, Aramais Robert
Format Patent
LanguageEnglish
Published 11.04.2024
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:In one embodiment, a coupler includes a glass tube having a refractive index n3 and a passageway, a first optical waveguide and a second optical waveguide positioned within the passageway, each of the first optical waveguide and the second optical waveguide comprising a core surrounded by a cladding. The glass tube further includes a tapered region having a taper length. A coupling region is present between the first optical waveguide and the second optical waveguide within the tapered region. A refractive index of the cladding is less than a refractive index of the core, and a lowest refractive index of the cladding of the first optical waveguide and the second optical waveguide is n2. Additionally, n3 is lower than n2 such that a value of Δ2-3 is 0.07%≤Δ2-3≤0.125, where Δ2-3 equals (n22−n32)/2n22.
Bibliography:Application Number: US202217962721