Mach-Zehnder interferometer device for wavelength locking
US12399412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2023 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Dec 1, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/21
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed herein is an integrated photonics device including an on-chip wavelength stability monitor. The wavelength stability monitor may include one or more interferometric components, such as Mach-Zehnder interferometers and can be configured to select among the output signals from the interferometric components for monitoring the wavelength emitted by a corresponding photonic component, such as a light source. The selection may be based on a slope of the output signal and in some examples may correspond to a working zone at or around a wavelength or wavelength range. In some examples, the interferometric components can be configured with different phase differences such that the corresponding working zones have different wavelengths. In some examples, the slopes of the output signals may be weighted based on the steepness of the slope and all of the output signals may include information for wavelength locking the measured wavelength to the target wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.