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US 2015/0021291 A1Published application
Coupling system for optical fibers and optical waveguides
AssigneeCisco Technology, Inc.
InventorsKalpendu Shastri, Ravi Sekhar Tummidi, Vipulkumar Patel
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Abstract
An optical coupler may include a fiber optic structure that has a portion of an outer surface that is beveled at a predetermined angle relative to a longitudinal axis of the fiber optic structure. The beveled outer surface portion may be optically coupled with a waveguide core of an optical integrated circuit. The fiber optic structure may also include a second outer surface portion that is butt coupled to an end of an optical fiber to optically couple the second outer surface portion with the optical fiber.
Claims20
A method comprising:
- affixing an optical fiber in a channel formed in a slab to form an integrated structure, the optical fiber comprising a core portion and a cladding portion;
- and
- removing a first portion of the integrated structure from a second portion of the integrated structure at a predetermined angle defined relative to a longitudinal axis of the fiber optic structure,
- wherein the second portion has an outer surface portion that is beveled at the predetermined angle after removing the first portion from the second portion, and
- wherein the beveled outer surface portion comprises both the core portion and the cladding portion.
2 more elements
A method comprising:
- forming a channel in a slab, the channel having a depth that increases according to a predetermined angle from a first end to a second end of the slab;
- affixing a rounded outer surface of an optical fiber to inner walls of the slab, the inner walls defining the channel, wherein a first portion of the optical fiber is disposed in the channel and a second portion of the optical fiber is outside of the channel;
- removing at least some of the second portion of the optical fiber that is outside of the channel to form a flat outer surface of the optical fiber by beveling the second portion at a predetermined angle, wherein the flat outer surface comprises a core and a cladding of the optical fiber.
A method comprising:
- applying an adhesive material to a top layer of an optical waveguide structure of an optical integrated circuit;
- aligning a beveled outer surface portion of a fiber optic structure with a nanotaper portion of the optical waveguide structure, the beveled outer surface beveled at a predetermined angle relative to a longitudinal axis of the fiber optic structure;
- contacting the beveled outer surface of fiber optic structure to the adhesive material to affix and optically couple the fiber optic structure to the optical waveguide structure.
Dependencies are inferred from the claim text.