Hello, everyone!
In this post, I would like to share with you the OSNR detection results with a fiber cut.
Theoretically, a fiber cut downstream of an OMS section will not affect the OSNR results upstream of the OMS section. However, according to the OD algorithm, the OSNR of wavelengths is calculated based on the OMS section where the wavelengths are located. The OPM8 or MCA board in the downstream needs to be used to rectify the OSNR detection results of each detection point in the OMS section. If a fiber cut occurs downstream, the upstream of the OMS section does not have the rectification data of the downstream and therefore does not have the OSNR results. The upstream and downstream mentioned in the description refer to the upstream and downstream in the OMS section instead of the upstream and downstream of a service or the OMS section.
That's all, I hope you like it.
Thank you!
