As the core component of 5G base station construction, photoelectric module plays an important role in realizing photoelectric conversion. For a long time, the optical module market has been monopolized by foreign manufacturers, especially in the field of high-end optical communication chips. However, with the accelerated development of new domestic infrastructure and the development of 5G industry, the number of domestic optical module market demand has gradually increased.
In terms of 5G bearer technology solutions and industry research. Dr. Tang, an optical transmission expert at China Telecom Research Institute, mentioned that the 5G backhaul scheme is relatively unified, and the access layer is mainly 25G and 50G. At the initial stage of construction, the bandwidth and capacity of 5G have not been expanded, while the first-level backhaul of 25G can basically meet the demand. With the expansion of network scale and network concentration, 50G and 100G will appear at the access layer of the network. In the future, 100G is the mainstream at the convergence layer and core layer. With the expansion of network scale and network concentration, it may reach 400G in the future, and even WDM technology can be used to increase capacity.
Laser welding solution for optical module
There are several technologies for 5G prequel. The most mature CWDM is the earliest and most mature. It can support 6-wave, while LWDM/MWDM supports 12-wave 25G, and can further save optical fiber. For optical modules, the forward 25G/10G interface is compatible, and the technology in this field is also very mature. For 100G, high-density and low-power packaging is required, such as SFP28. The overall demand for 5G construction must be low cost and interconnected, which can substantially reduce costs.
In the co-construction and sharing mode, CRAN will become the main application scenario. CRAN has the following advantages: 1. Compared with DRAN, CRAN can reduce the demand for terminal computer room and transmission equipment, and save site acquisition, computer room rent and transmission costs. Theoretically, the higher the concentration, the more obvious the effect. 2. The centralized placement of DU facilitates unified maintenance, so it has certain advantages over DRAN in construction and maintenance costs. CRAN will become the main deployment mode of 5G construction. 3. At the same time, the CRAN method can realize DU pooling or clouding, and realize the sharing and multiplication of baseband resources. Business collaboration between sites. Because CRAN consumes more forward fiber, xWDM will become the mainstream.
The development of optical communication module opens the industrial market for laser welding
With the gradual expansion of 5G commercial operation, the explosive growth of 100G optical modules will certainly drive the explosive growth of 100G optical modules. At present, mainstream optical module manufacturers have begun to develop and produce 100G optical module components. However, the traditional welding process leads to the decline of product qualification rate. Yuli automatic laser temperature control laser welding perfectly solves the problem of mass production of 100G optical modules. With the approval of Huawei, Accelink and other customers, mass production has been achieved.
Product Overview
Constant temperature precision laser tin welding machine is our company's standard welding equipment, mainly composed of automatic tin spotting device/automatic tin wire feeding device, infrared real-time temperature feedback system, CCD coaxial positioning system, and semiconductor laser. The thermostatic laser soldering software independently developed by the company can realize the processing of processing parameters at different welding points and different heights at one time, and can monitor the completion of the operation in real time during the welding process. PID online temperature control feedback system can control constant temperature welding and improve welding yield and precision.
Product features
1. PC control, visual operation. High-definition CCD camera, optional MARK+DXFGEBER graphics or template matching mode, automatic positioning, meet the requirements of full-automatic or online processing of high-precision devices, and reduce manual intervention.
2. It has a temperature control model with core technology, and uses high-precision infrared temperature detector for real-time temperature feedback and control.
3. Non-contact welding, no mechanical stress damage, fast heating speed, small heat affected zone.
4. Laser, CCD, temperature measurement and indicator light are four points coaxial, which solves the problem of multiple optical path coincidence in the industry and reduces complex debugging.
5. Self-developed thermostatic laser soldering software can realize different parameter calling and processing, which is convenient for customers to use.
6. The whole modular design of optical system, motion unit and control system improves the stability and maintainability of the system.
Applicable fields
Mini-speaker/motor, connector, camera, PTH (also in-line components), PGAs (pin grid electronic products), RFI field, connector, hybrid reassembly components.
