Abstract
This disclosure introduces a site-level correlation model designed to isolate physical fiber faults—especially transient or intermittent breaks—in cascaded MPO (Multi-Fiber Push-On) cables within ROADM networks. The key innovation uses bi-directional power monitoring rather than pilot tones or specialized FIM (Fiber Interface Module) hardware. By correlating simultaneous Loss of Signal (LOS) events at multiple Rx ports with the corresponding Tx ports that remain active, the method reliably identifies actual physical cable or connector faults. A fault-counter mechanism further tracks repeated toggling events, enabling operators to prioritize specific cables for inspection or replacement. This passive, vendor-agnostic approach simplifies network infrastructure, reduces unnecessary dispatches, and improves operational efficiency by providing targeted fault isolation and long-term quality metrics for MPO cabling.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Anonymous, "Correlation Model to Isolate Transient Inter-Degree Fiber-Faults in ROADMs", Technical Disclosure Commons, (February 03, 2025)
https://www.tdcommons.org/dpubs_series/7798