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:
Apr. 30, 2019
Filed:
Mar. 07, 2018
Kvh Industries, Inc., Middletown, RI (US);
Liming Wang, Tinley Park, IL (US);
KVH Industries, Inc., Middletown, RI (US);
Abstract
The described embodiments relate to a photonic integrated circuit (PIC) for use in a fiber optic gyroscope (FOG). Some embodiments describe a PIC with connectors for coupling to external components such as a light source, a photodetector and a fiber coil, with beamsplitting devices (e.g., couplers), waveguide and other photonic components integrated on the PIC. Some embodiments describe a hybrid PIC (HPIC) with the PIC, light source and photodetector attached to a common submount, and with connectors for coupling to a fiber coil. Other embodiments describe an extended PIC (EPIC) that integrates the PIC components, the light source, the photodetector, and other components (e.g., a wavemeter) on a common substrate. The described embodiments may also include a detection/feedback circuit that provides control signals and other parameters to the PIC, HPIC, or EPIC, and receives output signals from the PIC, HPIC, or EPIC.