Optical module is mainly used in the field of data communication,and its function is to realize the mutual transformation of photoelectric signals.Because of the rise of big data,blockchain,cloud computing,Internet of Things,artificial intelligence and 5G,which makes data traffic grow rapidly,optical interconnection of data center as well as mobile communication has become a research hot spot in optical communication industry.Next,www.fs-transceivers.com will introduce in detail what fields optical modules can be used in.

I.Data center

The host room of data center places a large number of network switches,server groups,etc.They are the core of integrated cabling and information network equipment,and also the data convergence center of information network system.The connection between servers,between switches,and between servers and switches requires the use of optical modules(directly connected copper cables,active optical cables),fiber optic patch cords,and other transmission carriers to achieve data interoperability.

With the growing market demand for data transmission,IDC rooms can enhance the business competitiveness of small and medium-sized enterprises.The diversity of data center interconnection scenarios and individualized customer needs have given rise to different types of network equipment and transmission carriers(active fiber optic cable,direct copper cable,optical modules,fiber optic patch cords),so users need to make a choice again based on the actual application scenario when choosing relevant equipment or accessories.

Second,mobile communication base station

Mobile communication base stations of operators also need optical modules to achieve interconnection between devices,base stations have RRU and BBU equipment,in the application,we want to connect the links of these two devices,which requires our optical modules and fiber patch cords,in the 4G network,the equipment used to connect BBU and RRU is mainly 1.25G optical module,2.5G optical module,6G optical module,10G optical module.

Passive WDM system

Passive WDM system is mainly used in metro network,backbone network and wide area network,and CWDM optical module and DWDM optical module are commonly used.Among them,CWDM optical module adopts CWDM technology,which can save fiber resources by combining optical signals of different wavelengths together through an external wavelength division multiplexer and transmitting them through one fiber.At the same time,the receiver side needs to use a wavelength decomposition multiplexer to decompose the complex optical signal.

The channel spacing of passive wavelength division multiplexing(CWDM)technology is 20nm,and the working wavelength is 1270-1610nm.CWDM optical modules of 40KM and above use the rear wave(1470-1610nm),and CWDM optical modules with transmission distance of 10KM and 20KM use the full wave band(1270-1610nm).

CWDM optical module is usually used in CWDM system,which is lower cost than DWDM optical module and widely used.Within a CWDM system,the CWDM Optical Transceiver is inserted in the switch,and a patch cable is used to connect the CWDM optical module and CWDM decomposition multiplexer or OADM optical splitting and multiplexing to work.

Four,SAN/NAS storage network

SAN/NAS storage network is mainly used to store data,where the SAN network mainly consists of servers,Fibre Channel switches,storage devices,and transmission carriers(optical modules,fiber optic patch cables);NAS storage network mainly consists of NAS storage,switches,end devices(computers),transmission carriers(optical modules,fiber optic patch cables).It should be noted that SAN network uses Fibre Channel optical module,which needs to support FC Fibre Channel protocol,while the optical module used in NAS storage network only needs to comply with Ethernet protocol.

1,NAS storage network schematic diagram is shown below.

2、SAN storage network schematic diagram is shown below.

V.5G bearer network

The advent of the 5G era has indeed led to a new round of growth space for the optical module industry,5G bearer network is generally divided into metro access layer,metro convergence layer,metro core layer/provincial trunk,to achieve the 5G service front and back transmission function,which is mainly dependent on optical modules between the layers of equipment to achieve interconnection.

The 5G forward transmission network mainly uses 25G SFP28(eCPRI/CPRI)Optic Transceiver,including dual-fiber bi-directional,single-fiber BiDi,25G WDM(including Tunable wavelength tunable)modules and other solutions.

Backhaul in 5G is mainly used in 25G,50G,100G,200G,400G optical modules,supporting a variety of interface protocols such as CPRI,eCPRI,Ethernet,OTN,and modulation formats such as NRZ,PAM4,DMT.The growth demand for optical modules is mainly dependent on the data communication market and telecom market,and in today's data era,optical modules are bound to attract new development opportunities.