The full English name of D/T is datacom/telcom.

Datacom mainly covers computer video, data communication and other services, while telcom primarily includes wireless voice communication and similar services.

Products of this type are mostly used in the backbone network of optical fiber networks.

PON stands for Passive Optical Network, which refers to a passive optical network. Such products are mainly applied in the access network of optical fiber network systems. Among them, triplex products can not only transmit optical fiber signals, but also output analog signals.

In the field of optical transmission networks (such as OTN), equipment manufacturers may independently develop and produce coherent optical modules. In contrast, in data communication fields such as data centers and servers, equipment manufacturers generally adopt the strategy of external procurement.

With the growing demand for artificial intelligence computing power, the application of optical modules in devices such as high-end graphics cards is gradually expanding.

Optical modules are mainly classified into GBIC, SFP, SFP+, XFP, SFF, CFP and other forms; common optical interface types include SC and LC. Currently, SFP, SFP+ and XFP are widely used instead of GBIC, because GBIC has a larger size while SFP features a more compact footprint.

Classification by fiber type:

Single-mode optical modules are suitable for long-distance transmission;

Multi-mode optical modules are suitable for short-distance transmission.

Function:

Optical modules serve as the transmission carrier between switches and other equipment, with full consideration given to transmission efficiency and communication security.