Silicon photonics thermal phase shifter with reduced temperature range
US8610994B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2012 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Aug 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/17
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical devices, phased array systems and methods of phase-shifting an input signal are provided. An optical device includes a microresonator and a waveguide for receiving an input optical signal. The waveguide includes a segment coupled to the microresonator with a coupling coefficient such that the waveguide is overcoupled to the microresonator. The microresonator receives the input optical signal via the waveguide and phase-shifts the input optical signal to form an output optical signal. The output optical signal is coupled into the waveguide via the microresonator and transmitted by the waveguide. At an operating point of the optical device, the coupling coefficient is selected to reduce a change in an amplitude of the output optical signal and to increase a change in a phase of the output optical signal, relative to the input optical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.