Optical communication systems, devices, and methods including high performance optical receivers
US10367588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2018 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Mar 21, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/64
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to communication systems, devices, and methods for providing for a wide bandwidth optical receiver including amplification through optical beating from a local oscillator laser operating without a phase-locked loop at frequency near the receiver optical signal and decreasing the system-performances dependence on optical polarization alignment between the signal and the local oscillator. Systems, devices, and methods including a local oscillator providing a local oscillator signal having a local oscillator frequency that may be controlled based on a frequency offset from the signal center frequency through the use of monitoring signals representative of the frequency offset. A combiner/splitter couples the optical data signal with light from the local oscillator to provide first and second coupled optical signals with orthogonal polarization. Two opto-electrical converters for converting first and second coupled signals into first and second electrical signals. The first and second electrical signals are individually rectified and then combined to provide the electrical data signal. The opto-electronic converters and rectifiers may have a bandwidth subs…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.