Optical transmission apparatus and optical transmission system
US9673929B2 · kind B2 · utility
2Cited by
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14Claims
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Key dates
| Filing date | Jul 28, 2015 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Oct 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/02216
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical transmission apparatus including: an attenuator that attenuates a power of a first optical signal generated in a first modulation method to a first target level and attenuates a power of a second optical signal generated in a second modulation method, a modulation level in the second modulation method being lower than the modulation level in the first modulation method, to a second target level, the second target level being lower than the first target level; and a transmitter that sends a WDM signal including the first optical signal and the second optical signal that have been attenuated by the attenuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.