Systems and methods for side-lobe compensation in reconfigurable optical add-drop multiplexers
US8280257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Oct 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/02216
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods to reduce passband side-lobes associated with WSS-based ROADMs by applying a filter on each channel are provided. In an exemplary embodiment, a comb filter, such as a thin film filter or an interleaver, is utilized. Additionally, the present invention provides systems and methods to adaptively control amplifier target power and per wavelength target power to maintain signal launching power as per design in networks with WSS-based ROADMs. Accordingly, signal OSNR does not collapse faster than other similar configured system without WSS-based ROADM. In order to correct amplifier target power, the present invention utilizes system information about side-lobe size and OSNR at each amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.