Gain flattening tunable filter
First Claim
Patent Images
1. An optical apparatus, comprising:
- an optical fiber with an interaction region; and
a plurality of individual optical fiber deformation structures positioned adjacent to the optical fiber at the interaction region, each individual optical fiber deformation structure configured to introduce a mechanical or index deformation of a portion of the optical fiber and create perturbations in the optical modes in the fiber and provide a coherent coupling between two modes.
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Abstract
An optical apparatus includes an optical fiber. A plurality of individual optical fiber deformation structures are positioned adjacent along a length of the optical fiber. Each of an individual optical fiber deformation structure introduces a mechanical or index deformation of a portion of the optical fiber to create perturbation in the optical modes in the fiber and provide a coherent coupling between two modes in the optical fiber.
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Citations
39 Claims
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1. An optical apparatus, comprising:
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an optical fiber with an interaction region; and
a plurality of individual optical fiber deformation structures positioned adjacent to the optical fiber at the interaction region, each individual optical fiber deformation structure configured to introduce a mechanical or index deformation of a portion of the optical fiber and create perturbations in the optical modes in the fiber and provide a coherent coupling between two modes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A dual filter, comprising:
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an optical fiber with an intermediate section;
a first filter including a first plurality of individual optical fiber deformation structures positioned adjacent along a length of the optical fiber, each individual optical fiber deformation structure configured to introduce a mechanical or index deformation of a portion of the optical fiber to create perturbations in the optical modes in the fiber and provide a coherent coupling between two modes; and
a second filter including a second plurality of individual optical fiber deformation structures positioned adjacent along a length of the optical fiber, each individual optical fiber deformation structure configured to introduce a mechanical or index deformation of a portion of the optical fiber to create perturbations in the optical modes in the fiber and provide a coherent coupling between two modes, wherein the intermediate section is positioned between the first and second filters. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. An optical apparatus, comprising:
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an optical circulator with at least a first port configured to be coupled to an input fiber, a second port configured to be coupled to an output fiber and a third port configured to be coupled to an optical fiber; and
a fiber deformation structure positioned adjacent along a length of the optical fiber, the fiber deformation structure including a plurality of individual optical fiber deformation structures configured to introduce a mechanical or index deformation of a portion of the optical fiber to create perturbations in the optical modes in the fiber and provide a coherent coupling between two modes of the optical fiber. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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39. An add/drop apparatus, comprising:
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an optical fiber with an interaction region;
a first mode selective coupler coupled to the optical fiber;
a second mode selective coupler coupled to the optical fiber; and
a plurality of individual optical fiber deformation structures positioned adjacent to the optical fiber at the interaction region between the first and second mode selective couplers, each individual optical fiber deformation structure configured to introduce a mechanical or index deformation of a portion of the optical fiber and create perturbations in the optical modes in the fiber and provide a coherent coupling between two modes.
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Specification