Transmission device and transmission system
US11711160B2 · kind B2 · utility
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1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2021 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Dec 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/02216
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transmission device including: a signal power detection circuit that detects signal power of a wavelength-division-multiplexed optical signal to be transmitted to a transmission line into which pumping light is inputted from a Raman amplifier; a variable optical attenuator that attenuates the wavelength-division-multiplexed optical signal; and a control circuit that reduces an attenuation amount of the variable optical attenuator depending on an increase in the signal power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.