Modal-noise mitigator and associated method
AssigneeDolby Laboratories Licensing Corporation
InventorsJuan P. Pertierra, Barret Lippey
Life of this patent
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Abstract
A method for mitigating modal noise includes applying a time-varying mechanical force to a fiber segment of the multimode optical fiber in at least a first direction orthogonal to a fiber axis of the multimode optical fiber within the fiber segment. A modal-noise mitigator for a multimode optical fiber includes an actuator configured to apply a time-varying mechanical force to a fiber segment of the multimode optical fiber in at least a first direction orthogonal to a fiber axis of the multimode optical fiber within the fiber segment.
Claims25
A modal noise mitigation method for mitigating noise in a multimode optical fiber, comprising:
- providing an elastic coupler comprising an elastic material and an enclosure at least partially surrounding the elastic material;
- embedding a fiber segment of the multimode optical fiber within the elastic material;
- and
- applying a first time-varying mechanical force to the elastic coupler such that a second time-varying mechanical force is applied, via the enclosure and the elastic material, to the fiber segment, wherein the second time-varying mechanical force is applied to the fiber segment in at least a first direction orthogonal to a fiber axis of the fiber segment and wherein the second time-varying mechanical force differs in at least one of amplitude, fundamental frequency and net direction from the first time-varying mechanical force.
A modal-noise mitigator for mitigating noise in a multimode optical fiber, comprising:
- an elastic coupler comprising an elastic material and an enclosure at least partially surrounding the elastic material, the elastic coupler configured for embedding a fiber segment of the multimode optical fiber;
- an actuator configured to apply a first time-varying mechanical force to the elastic coupler such that a second time-varying mechanical force is applied, via the enclosure and the elastic material, to the fiber segment, wherein the second time-varying mechanical force is applied to the fiber segment in at least a first direction orthogonal to a fiber axis of the fiber segment and wherein the second time-varying mechanical force differs in at least one of amplitude, fundamental frequency and net direction from the first time-varying mechanical force.
Dependencies are inferred from the claim text.