Apparatus and method for reducing distortion of an optical signal
US10897313B2 · kind B2 · utility
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Key dates
| Filing date | Oct 18, 2018 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | Oct 18, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An RF signal to be carried by an optical link is modulated onto two optical beams. The modulators are tuned differently so that the distortion products carried on one beam are relatively larger compared to the fundamental compared with other beam. One of the beams is optically upconverted by the appropriate Brillouin shift frequency and the two beams counter-propagated through an optical waveguide in order to create a Brillouin grating. The grating acts to separate the distortion products from the fundamental so as to provide at an output of the link a signal in which the distortion products are insignificant is not absent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.