Can OM1 fiber optic cables be spliced ​​with OM4

While it is technically possible to splice OM1 and OM4 fiber optic cables together, it is not recommended due to differences in core size and potential performance issues.Compatibility IssuesCore Size Differences: OM1 fiber has a core diameter of 62.5 microns, while OM4 fiber has a core diameter of 50 microns. Mixing these two types can lead to significant signal loss, similar to connecting pipes of different diameters where the larger pipe's flow is restricted by the smaller pipe .Performance Implications: When OM1 and OM4 fibers are mixed, the performance may degrade, especially at higher data rates. OM4 is designed for higher bandwidth and longer distances, while OM1 is not optimized for such applications. This can result in increased attenuation and reduced overall link performance .RecommendationsAvoid Mixing: It is generally advisable to avoid mixing different types of multimode fibers in the same run. If you have existing OM1 installations, consider replacing them with OM4 or OM3 fibers to ensure compatibility and optimal performance .Use Uniform Fiber Types: For new installations, using a single type of fiber throughout the entire network is recommended to prevent potential issues and ensure consistent performance . In summary, while you can technically splice OM1 and OM4 fibers together, it is not advisable due to the differences in core size and the potential for performance degradation. It is best to use uniform fiber types for optimal results.