Types and specifications of OA boards for WDM networks

27

Fiber amplifiers or OA boards amplify optical signal power to extend the signal transmission distance. The product documentation has described the types and specifications for fiber amplifier boards. For details, see the related topics in the product documentation.

Other related questions:
Differences of the MUT_LOS and R_LOS alarms on OA boards of WDM devices
Question: On Huawei WDM devices, why some OA boards report the R_LOS alarm whereas some OA boards report the MUT_LOS alarm when they do not receive any light or the receive optical power is excessively low? Analysis: None Answer: When the OA boards (such as WPA, WBA, and WLA) on 320G devices do not receive any optical signals, the R_LOS alarm is reported. When the OA boards (such as OPU, OBU, and OAU) on 1600G, 800G, and 400G devices do not receive any optical signals, the MUT_LOS alarm is reported. Suggestion and conclusion: The R_LOS alarm is used to indicate the loss of input optical signals on a single wavelength of a board such as OTU. The MUT_LOS alarm is used to indicate the loss of multiplexed optical signals on a board such as M40, D40, OAU, OBU, or OPU. It is inaccurate that the R_LOS alarm is reported when OA boards do not receive any optical signals. Therefore, the R_LOS alarm is canceled for new OA boards. When developing new 1600G, 800G, and 400G WDM systems, Huawei adjusts the alarm that is reported when OA boards do not receive any optical signals. To be specific, the OA boards report the MUT_LOS alarm when receiving no optical signals.

Center frequency deviation specifications for WDM boards
The center wavelength deviation specifications of WDM-side modules are as follows: The frequency offset is ±10 GHz for fixed wavelengths and ±5 GHz for tunable wavelengths. For details about optical module specifications, see the Product Documentation.

Differences between a network with PID networking using OA boards and a common network
For common networking without PID boards, connecting the built-in VOAs on OA boards is not mandatory. For PID board networking, however, the built-in VOAs on OA boards must be connected because PID boards are commissioning-free and the VOAs need to be automatically adjusted to ensure that the output optical power satisfies requirements.

Method used to query the gain of an OA board
In the NE Explorer of the U2000, choose Configuration > WDM Interface. Then query or set the value of the Nominal Gain parameter.

Common OA boards of the OSN 6800
The common OA boards of the OSN 6800 are as follows: OAU1 (optical amplifying board) OBU1/OBU2 (optical booster board) CRPC (case-shape Raman pump amplifier board for C-band)

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top