Augmented multimodal spatial optical-fibre modes
AssigneeOrange
InventorPhilippe Chanclou
Life of this patent
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Abstract
A device for inserting a plurality of optical beams into a single-mode optical fibre, a guiding structure of which is composed of a core with a first refractive index, a cladding with a second refractive index, and a coating with a third refractive index. The device includes an optical mixer configured to insert, into the single-mode optical fibre, the plurality of optical beams, at least one of which has a distribution of its radial and angular electromagnetic amplitude with a maximum amplitude peak in the cladding.
Claims12
An injecting method comprising:
- injecting a plurality of optical beams into an output optical fiber, which has a guiding structure composed of a core with a first refractive index, a cladding with a second refractive index, and a sheath with a third refractive index, wherein the injecting comprises:
- obtaining the plurality of optical beams, and
- injecting the plurality optical beams by mixing the plurality of optical beams into the output optical fiber, wherein the core and the cladding play a role of a multimodal guiding core, and the sheath plays a role as cladding for the output optical fiber for at least certain spatial modes, and wherein at least one of the optical beams undergoes a conversion in which a respective multimodal spatial mode is applied prior to the injection into the output optical fiber, generating for the respective optical beam a distribution of its radial and angular electromagnetic amplitude with a maximum amplitude peak in the cladding of the output fiber.
A device for injecting a plurality of optical beams into an output optical fiber, which has a guiding structure composed of a core with a first refractive index, a cladding with a second refractive index, and a sheath with a third refractive index, the device comprising:
- an optical mixer configured to inject into the output optical fiber the plurality of optical beams wherein the core and the cladding play a role of a multimodal guiding core, and the sheath plays a role as cladding for the output optical fiber for at least certain spatial modes,
- a plurality of optical receivers configured to receive optical beams from a plurality of optical fibers, upstream of the optical mixer, and
- at least one spatial-mode converter configured to modify a distribution of a radial and angular electromagnetic amplitude of an optical beam, a first of the optical receivers and the optical mixer, and thereby generate the distribution with a maximum amplitude peak in the cladding of the output fiber.
Dependencies are inferred from the claim text.