Patent ID: 11908499
Assignee: SEAGATE TECHNOLOGY LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A heat-assisted magnetic recording head comprising:
a laser configured to emit electromagnetic radiation;
a near-field transducer configured to focus and emit an optical near-field;
a photodiode configured to receive a portion of the electromagnetic radiation;
a primary waveguide comprising:
a first segment adjacent to the laser;
a second segment adjacent to the near-field transducer; and
a third segment disposed between the first segment and the second segment of the primary waveguide; and

a secondary waveguide comprising:
a first segment adjacent to the photodiode;
a second segment that is at an opposite end of the secondary waveguide from the first segment; and
a third segment disposed between the first segment and the second segment of the secondary waveguide.