Integrated optical-microwave phase detecting apparatus and method based on 3X3 MMI coupler
US11274970B1 · kind B1 · utility
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Key dates
| Filing date | Nov 18, 2019 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Sep 21, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29344
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to an integrated phase detector. In an embodiment, a first multi-mode interference coupler that receives the optical signal and outputs optical signals with a plurality of modes, and a second multi-mode interference coupler that receives one of the optical signals with the plurality of modes and a modulated signal generated through performing a phase modulation on another of the optical signals with the plurality of modes by the microwave signal, and outputs a first optical interference signal and a second optical interference signal may be included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.