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Views: 399 Author: Anna Publish Time: 2025-10-10 Origin: Site
Optical modules are primarily used in data communications, converting optical and electrical signals.
The main computer room in a data center houses numerous network switches and server clusters. These are the core of integrated cabling and information network equipment, serving as the data aggregation center for information network systems. Connections between servers, switches, and servers require ETU-LINK optical modules (direct-connect copper cables, active optical cables), fiber optic patch cables, and other transmission media to achieve data interoperability.
With the growing market demand for data transmission, IDCs can enhance the competitiveness of small and medium-sized enterprises. The diverse interconnection scenarios in data centers and the personalized needs of customers have spawned different types of network equipment and transmission media (active optical cables, direct-connect copper cables, optical modules, and fiber optic patch cables). Therefore, users should consider the specific application scenarios when selecting related equipment and accessories.
Carriers' mobile communication base stations also require optical modules to interconnect devices. Base stations contain RRUs and BBUs. In applications, connecting these two devices requires optical modules and fiber optic patch cables. In 4G networks, the devices used to connect BBUs and RRUs are primarily 1.25G, 2.5G, 6G, and 10G optical modules.
Passive wavelength division multiplexing systems are primarily used in metropolitan area networks (MANs), backbone networks, and wide area networks. Commonly used are CWDM and DWDM optical modules. CWDM optical modules utilize CWDM technology. Using an external wavelength division multiplexer (WDM), they combine optical signals of different wavelengths and transmit them over a single optical fiber, conserving fiber resources. Furthermore, a wavelength division multiplexer (DWDM) is required at the receiving end to decompose the complex optical signals.
Passive wavelength division multiplexing (CWDM) technology uses a 20nm channel spacing and operates at a wavelength of 1270-1610nm. CWDM optical modules for transmission distances of 40km and above use the rear wavelength (1470-1610nm), while CWDM optical modules for transmission distances of 10km and 20km use the full-band wavelength (1270-1610nm).
CWDM optical modules are commonly used in CWDM systems. They are less expensive than DWDM optical modules and are widely used. In a CWDM system, CWDM optical modules are plugged into a switch and connected to a CWDM demultiplexer or OADM optical add/drop multiplexer using patch cables.
SAN/NAS storage networks primarily store data. SAN networks primarily consist of servers, Fibre Channel switches, storage devices, and transmission media (optical modules and fiber optic patch cables); NAS storage networks primarily consist of NAS storage, switches, terminal devices (computers), and transmission media (optical modules and fiber optic patch cables). It's important to note that SAN networks use Fibre Channel optical modules and must support the FC protocol, while NAS storage networks only require Ethernet protocols.
The advent of the 5G era has undoubtedly ushered in a new round of growth for the optical module industry. 5G transport networks are generally divided into the metropolitan access layer, the metropolitan aggregation layer, and the metropolitan core layer/provincial trunk lines, providing fronthaul and backhaul functions for 5G services. The interconnection between devices at each layer primarily relies on optical modules.
5G fronthaul networks primarily utilize 25G SFP28 (eCPRI/CPRI) optical modules, including dual-fiber bidirectional, single-fiber BiDi, and 25G WDM (including tunable wavelength) modules.
5G backhaul primarily utilizes 25G, 50G, 100G, 200G, and 400G optical modules, supporting various interface protocols such as CPRI, eCPRI, Ethernet, and OTN, as well as modulation formats such as NRZ, PAM4, and DMT.
Today, many scenarios in our daily work and lives have achieved the "fiber in, copper out" model. This means that metal transmission media is gradually being replaced by fiber, and optical communications has become a trend. With the accelerated deployment of 5G networks, the rapid development of cloud computing, and the mass construction of large-scale data centers, YXFiber 400G-800G will become the primary competitive direction in the optical communications industry.
