In-band optical signal-to-noise ratio monitor
US9515727B2 · kind B2 · utility
1Cited by
1References
3Claims
0Family size
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Key dates
| Filing date | Mar 5, 2015 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Mar 5, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/07955
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and systems for in-band OSNR monitoring include a tunable optical filter to scan a passband of a desired optical channel. The optical power over the passband is measured and digitized to power waveform data. The power waveform data is processed with a digital signal processor to calculate OSNR. Additionally, various implementations accommodate dual polarization modulation formats using a parallel architecture and an alternating sequential architecture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.