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US 11,328,745 B2Granted
Waveguide with optical isolator for heat-assisted magnetic recording
AssigneeSeagate Technology LLC
InventorsJohn Bernard McGurk, Reyad Mehfuz, Christopher Neil Harvey, Aidan Dominic Goggin
Life of this patent
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Abstract
An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide having a gap portion is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer (NFT) that directs energy resulting from plasmonic excitation to a recording medium. An optical isolator is disposed over the gap portion.
Claims20
A method, comprising:
- depositing one or more cladding layers on a substrate;
- depositing a waveguide having a gap portion on the one or more cladding layers;
- transfer printing an optical isolator over the gap portion;
- and
- depositing cladding material over the waveguide and the optical isolator.
2 more elements
An apparatus comprising:
- a substrate;
- a laser formed on a non-self supporting structure and bonded to the substrate;
- a waveguide having a gap portion and at least one bend deposited proximate the laser on the substrate, the waveguide configured to communicate light from the laser to a near-field transducer (NFT) that directs energy resulting from plasmonic excitation to a recording medium;
- and
- an optical isolator integrated over the gap portion.
2 more elements
Dependencies are inferred from the claim text.