OMXD30001

OMXD30001 is a small form-factor pluggable module, operating at 850 nm over a rated reach of 0.3 km. It is the part that turns electrical signals into light at one end of a fibre and back at the other, and it is the component most often got wrong on an order, because two modules can look identical and be entirely incompatible.

It is specified at 10 Gbit/s.

The number that decides whether this will actually work: the optical power budget. Transmit power is -7.3 to -1 dBm and receiver sensitivity is -9.9 dBm, so the budget is -7.3 minus -9.9, which is 2.6 dB. That is the total loss the path can have before the link stops working. Over 0.3 km of multimode fibre at this wavelength, at roughly 3 dB per kilometre, the fibre itself accounts for about 0.9 dB. That leaves only about 1.7 dB for connectors, splices and ageing, so the rated distance assumes a clean path with very few joints. Measure the actual end-to-end loss before committing to this module at full reach.

This is a multimode module and it is not interchangeable with a single-mode one. Multimode fibre has a much wider core, so a single-mode module will not couple into it properly and a multimode module cannot drive a single-mode span. On multimode the limiting factor is usually not loss but modal bandwidth, which is why reaches are quoted in hundreds of metres rather than tens of kilometres, and why the fibre’s OM grade matters as much as its length.

The optical connector is LC. Worth confirming against the patch leads already on site.

One thing to raise before you order. Huawei transmission equipment generally expects Huawei-coded optics, and a module without the right vendor coding may be refused outright or raise a persistent alarm even when it is electrically identical to the correct part. We supply coded modules for that reason. Tell us the platform, the port, the fibre you have and the distance, and we will confirm this is the right module or point you at the one that is.

Green Code Technologies supplies Huawei optical modules alongside the transmission equipment they fit. We are a supplier of Huawei alongside HPE, Dell, Cisco, Samsung and Netgear, and we would rather confirm a part against Huawei’s own documentation than sell you the wrong one. Send us the platform and port at each end, the fibre you have and the distance and we will come back with a straight answer.