Fast transient suppressor for optical transmission systems
US11245488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2020 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Apr 20, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0081
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus is described. The apparatus comprises a downstream wavelength selective switch having an input port, an optical path operable to carry an optical signal, an optical source providing amplified spontaneous emission (ASE) light, an optical switch having a first input coupled to the optical path, a second input coupled to the optical source and receiving the ASE light, and an output coupled to the input port of the downstream wavelength selective switch. The optical switch couples either the first input or the second input to the output. Further included is a photodiode operable to monitor the optical signal, detect an optical loss of signal of the optical signal, and output a switch signal to the optical switch such that the optical switch couples the second input receiving the ASE light to the output whereby the ASE light is directed to the input port of the downstream wavelength selective switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.