Bragg grating chip
US11796842B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2020 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Apr 3, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0311
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a Bragg grating chip, which comprises a monocrystalline silicon substrate, a silicon dioxide layer arranged on the monocrystalline silicon substrate, a Bragg grating arranged on the silicon dioxide layer and a negative thermal-optical coefficient material arranged on the Bragg grating, so that the sensitivity of the Bragg grating based on lithium niobate crystals to temperature is eliminated, the drift amount of the reflection spectrum center wavelength of the Bragg grating chip in the environment temperature change of 1 k is basically zero, and the insensitivity of the spectral response of photoelectric devices such as optical filter, laser and the like formed by the lithium niobate Bragg grating to the temperature change can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.