Device for eliminating optical noise
US10097267B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2017 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Aug 9, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/697
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A device for eliminating optical noise receives an optical signal, and includes a first filter which transmits light falling within a same wavelength range as the optical signal, so as to output a filtered signal including the optical signal and first background noise, a second filter which transmits light having a wavelength falling outside the wavelength range of the optical signal, so as to output second background noise, a converter which converts the filtered signal into a first electrical signal and converts the second background noise into a second electrical signal, and an operational unit which performs a mathematical operation on products respectively of the first and second electrical signals and first and second parameters, to result in an output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.