Coupled optical waveguide resonators with heaters for thermo-optic control of wavelength and compound filter shape
US7356221B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2007 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | May 7, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An integrated optical device is disclosed comprising a substrate, optical waveguide, and compound optical resonator having a temperature sensor, at least two coupled optical resonators, and a heater localized to each optical resonator. An optical input signal is coupled to one of the resonators making up the compound resonator to form an optical output signal. The center wavelength and shape of the output signal is optimized with a feedback loop using the temperature sensor to control the power dissipated in at least one of the localized heaters. The power dissipated in the remaining resonator heaters is set according to a predetermined function having as an input variable the power dissipated in the resonant heater under control of the said feedback loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.