The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2025
Filed:
Jul. 12, 2022
Globalfoundries U.s. Inc., Malta, NY (US);
Zhuojie Wu, Port Chester, NY (US);
Yusheng Bian, Ballston Lake, NY (US);
GlobalFoundries U.S. Inc., Malta, NY (US);
Abstract
Disclosed is a photonic integrated circuit (PIC) structure including a scattering light-based monitor with photodetectors (e.g., PIN and/or avalanche photodiodes) placed adjacent to one or both sides of an end portion (i.e., a coupler) of a waveguide core at an optical interface with another optical device. The photodetectors are placed in such a way as to enable sensing of scattering light emitted from the end portion as light signals are received (e.g., either from the optical device for propagation to the main body of the waveguide core or from the main body for transmission to the optical device). Also disclosed are a monitoring system and method including the PIC chip structure with the above-described scattering light-based monitor. The system and method assess the optical interface using electric signals generated by the photodetectors.