Professional Knowledge

What are the wire sequence type of MPO fiber jumpers?

2021-03-18
The wire sequence type or polarity of the MPO fiber patch cord is in the form of various line arrangements of the MPO pre-terminated fiber optic cable, the MPO distribution box, the MPO coupler in the standard document ANSI/TIA-568-C.3, and The 10/40/100G Ethernet multimode fiber transmission system interface format has a description. In this paper, the wire sequence types A, B and C of MPO fiber jumpers are summarized as follows:
In the order details, Mothod A and Type A, Mothod B and Type B, Mothod C and Type C have the same meaning. In Chinese, Type A is a parallel practice, Type B is a crossover, and Type C is a line pair crossing. . However, many unprofessional fiber patch manufacturers or manufacturers that only produce single and double core jumpers without producing MPO fiber jumpers, because of insufficient understanding, often confuse the parallel practice of MPO line sequences with cross-cutting practices, because, to avoid confusion , or take the drawings as the standard to reduce unnecessary losses.
In the 40G QSFP module, the Type B form is generally used, but in the final form, it must be confirmed with the customer.
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