What is the maximum attenuation for all versions of multimode optical fiber cable (OM1-OM5) at 1300 nm in dB/km?

The maximum attenuation for multimode optical fiber cable at 1300 nm is an important specification for evaluating the performance of various types of multimode fibers. For OM1 through OM5 fibers, the standard maximum attenuation at this wavelength is set at 1.0 dB/km for OM1, and it increases with the new versions of multimode fibers up to OM5.

However, for OM3 and OM4, the maximum attenuation is typically specified as 1.5 dB/km. Thus, this value represents the upper limit for performance in practice when using multimode optical fibers.

Understanding this specification is crucial for network design and estimating distances and signal integrity over multimode fiber installations. By adhering to these attenuation limits, designers can ensure reliable data transmission with minimal signal loss over the designated distances for these fibers.