In-microresonator linear-absorption-based real-time photocurrent-monitoring and tuning with closed-loop control for silicon microresonators
US9134169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | May 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/585
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An integrated silicon optical device is capable of being monitored and tuned in real-time. The integrated silicon optical device includes: a bus waveguide, comprising an input port and an output port; an optical microresonator coupled to the bus waveguide, configured to selectively receive light at a desired resonance wavelength from the bus waveguide; a photodetector, configured to electrically read out an operation condition of the optical microresonator; a diode-tuner, configured to blueshift or redshift the resonance wavelength of the optical microresonator; a micro-heater, configured to redshift the resonance wavelength of the optical microresonator; and a control unit, comprising a transimpedance amplifier (TIA) and a microprocessor, configured to implement a two-stage closed-loop tuning scheme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.