Patent ID: 11971575
Assignee: OPENLIGHT PHOTONICS, INC.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 12:
13. A method of manufacturing a photonic integrated circuit with an integrated bandgap temperature sensor for measuring a temperature of an integrated photonic device, the method comprising:
creating, in a semiconductor device layer of a substrate, p-type and n-type doped regions forming a horizontal diode junction of the bandgap temperature sensor;
patterning the semiconductor device layer to create a waveguide in a plane of the horizontal diode junction and overlapping with the horizontal diode junction;
bonding a stack of doped semiconductor material to the substrate above the waveguide and the horizontal diode junction, the stack of doped semiconductor material comprising an intrinsic layer sandwiched between doped top and bottom layers;
patterning and etching the stack of doped semiconductor material to form a diode structure of the photonic device; and
creating metal connections to the n-type and p-type doped regions of the horizontal diode junction and to the top and bottom layers of the diode structure of the photonic device,
the horizontal diode junction being located at a predetermined distance from the diode structure of the photonic device to enable thermal coupling therebetween.