In a 40G system, you must accurately configure the fixed dispersion compensator. You also need to use the tunable dispersion compensator (TDC) to adjust dispersion precisely. In addition, you need to use TDC dispersion real-time adjustment to rectify dispersion offsets of transmission fibers caused by changes in factors such as ambient temperature.
Prerequisites
- Applicable to the LSXL, LSQ, LSXLR, TDC, NS3 boards of the OptiX OSN 6800, OptiX OSN 8800 T32 and OptiX OSN 8800 T64 NEs.
- Applicable to the R1N302 board of the OptiX OSN 9600/9800 series NEs.
NOTICE: Procedure
- Search the best dispersion compensation value and apply the configuration to the board.
- In the NE Explorer, select a board and choose from the Function Tree.
- Select the port, click Start Search. The search status changes to Searching. After successful search, the search status changes to The search is successful.
NOTE: - After successful search, only the search status automatically changes. Other parameters do not change until you query them.
- If you start searching the best value, you cannot set the dispersion compensation value.
- Optional: Set Fine Tune Switch to Enabled.
NOTE: After you enable the fine tune switch, the board may be fine tuned and the query result of the dispersion compensation value may change.
- In the NE Explorer, select a board and choose from the Function Tree.
- Manually set the dispersion compensation value and apply the configuration to the board.
- Set Dispersion Compensation Value (ps/nm) and Fine Tune Switch.
NOTE:
- The dispersion compensation value must be in the range of the dispersion compensation range.
- The dispersion compensation value and the best dispersion compensation value can be fine tuned only if they are in the fine tune range.
- Set Dispersion Compensation Value (ps/nm) and Fine Tune Switch.