Passive thermo-optic feedback for robust athermal photonic systems
US9063354B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2012 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Oct 26, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/15
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Thermal control devices, photonic systems and methods of stabilizing a temperature of a photonic system are provided. A thermal control device thermally coupled to a substrate includes a waveguide for receiving light, an absorption element optically coupled to the waveguide for converting the received light to heat and an optical filter. The optical filter is optically coupled to the waveguide and thermally coupled to the absorption element. An operating point of the optical filter is tuned responsive to the heat from the absorption element. When the operating point is less than a predetermined temperature, the received light is passed to the absorption element via the optical filter. When the operating point is greater than or equal to the predetermined temperature, the received light is transmitted out of the thermal control device via the optical filter, without being passed to the absorption element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.