Photonic integrated circuit for an interference fiber optic gyroscope (IFOG)
US10274319B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2018 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Mar 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4216
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.