Reconfigurable optical add/drop multiplexer
US7343066B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2005 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Dec 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2773
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reconfigurable optical add/drop multiplexer (ROADM) includes a first optical dynamic gain equalization filter (DGEF) having a first input for receiving an initial wavelength division multiplexed (WDM) signal, a first output for sending a phase shifted WDM signal, and a second output connected to a demultiplexer for demultiplexing a WDM drop signal thereby producing a plurality of drop channels. A second DGEF having a first input for receiving the phase shifted WDM signal, a second input connected to a multiplexer, for multiplexing a plurality of add channels to produce thereby a wavelength division multiplexed (WDM) add signal, and an output for sending a second adjusted WDM signal. The ROADM allows for the channels from the initial WDM signal to be dropped, added and equalized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.