Method and apparatus for heterodyne coherent detection
US9369228B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Aug 14, 2013 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Jun 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A simplified coherent receiver based on heterodyne detection with only two balanced photo detectors (PD) and two analog-to-digital converters (ADC) is disclosed. The polarization diversity hybrid can be simplified relative to the conventional one. The detected intermediate frequency signals are first down converted to baseband with I/Q separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.