Interconnecting a hollow-core fibre with a standard silica single-mode fibre
OwnerPhilippe CHANCLOUinventor
Life of this patent
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Abstract
A coupling device for coupling a single-mode or multicore optical fiber, referred to as a solid fiber, to a hollow-core optical fiber. The device includes a graded-index fiber section), wherein: the coupling device is coupled to a core of the solid fiber with a radial offset with respect to the center axis of the graded-index fiber section; the coupling device is coupled to the hollow-core fiber at an angle with respect to a plane orthogonal to the center axis, the angle of which is proportional to the radial offset and to parameters of the graded-index fiber.
Claims13
A coupling device for coupling between a single-mode or multi-core optical fiber, called solid fiber, and a hollow-core optical fiber, the coupling device comprising:
- the solid fiber, a graded-index fiber section, and the hollow-core fiber, wherein:
- the graded-index fiber section is coupled to a core of the solid fiber with a radial offset relative to the central axis of the graded-index fiber section;
- and
- the graded-index fiber section is coupled to the hollow-core fiber, with a contact surface of the hollow-core fiber being cleaved at an angle relative to a plane orthogonal to the central axis, with a value of said angle being a function of the radial offset and parameters of the graded-index fiber.
A method for manufacturing a coupling device, between a single-mode or multi-core optical fiber, called solid fiber, and a hollow-core fiber, the method comprising:
- welding the solid fiber to a graded-index fiber section, or to a first pure silica section, which is welded to the graded-index fiber section, with a radial offset of a core of the solid fiber-relative to a central axis of the graded-index fiber section;
- splitting the graded-index fiber section in order to give the graded-index fiber section a defined length, involving cleaving relative to a plane orthogonal to the central axis, at an angle whose value is a function of the offset and parameters of the graded-index fiber;
- splitting the hollow-core fiber with the cleavage at the angle;
- welding the hollow-core fiber to the graded-index fiber section, with the cleavage at the angle;
- with the solid fiber, the graded-index section and the hollow-core fiber being parallel to each other.
A method for manufacturing a coupling device, between a single-mode or multi-core optical fiber, called solid fiber, and a hollow-core fiber, comprising:
- welding the solid fiber to a graded-index fiber section, or to a first pure silica section, which is welded to the graded-index fiber section, with a radial offset of a core of the solid fiber relative to a central axis of the graded-index fiber section;
- welding the graded-index fiber section to a second pure silica section;
- splitting the second pure silica section in order to give the second pure silica section a defined length, involving cleaving relative to a plane orthogonal to the central axis, at an angle whose value is a function of the offset and parameters of the graded-index fiber;
- splitting the hollow-core fiber with the cleavage at the angle;
- welding the hollow-core fiber to the second pure silica section, with the cleavage at the angle;
- with the solid fiber, the graded-index section, the second pure silica section and the hollow-core fiber being parallel to each other.
Dependencies are inferred from the claim text.