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With the introduction of 400G optical modules, the interconnection of data centers is also gradually developing towards 800G Ethernet. The recent OFC 2020 conference in San Diego focused on 800G Ethernet, 800G technology and fiber jumpers for 800G networks, making 800G Ethernet another hot spot after 400G networks. However, 800G Ethernet is still being tested and perfected, and its large-scale deployment is still a long way off. 800G Ethernet and Optical module  standard Compared with 200G and 400G Ethernet, 800G Ethernet is a brand new technology. At present, several working groups have proposed specifications for 800G Ethernet. These specifications will be described in detail below. 1. The 800GBase-R will revert to 400G Ethernet technology for maximum cost savings Currently, the IEEE (Institute of Electrical and Electronics Engineers) does not have a standard for 800G Ethernet, but the 25G Ethernet Alliance (now known as the Ethernet Technology Alliance (ETC)) established the 800...

The 40GBase-LR4 optical module is adopted QSFP+ package form with wavelengths of 1271, 1291, 1311 and 1331nm, duplex LC connector. The maximum transmission distance can reach 10km when used with OS2 singlemode patch cord. Compatibility of HTF 40GBase-LR4 optical module The 40G QSFP+ LR4 optical module provided by HTF  can be widely compatible with Huawei, Ruijie, H3C, Cisco, Juniper, ZTE and other brands of switches. The optical modules provided are subject to strict quality control and compatibility test before leaving the factory, so as to ensure that users receive high cost-effective optical modules. Application of 40GBase-LR4 optical module 40GBase-LR4 optical module is widely used in 40G data center and metro optical transmission network. The 40GBase-LR4 optical module can simplify the network architecture and reduce the number of accessories, so as to save the room area, reduce the equipment stack and improve the bandwidth management and scheduling ability of single node equi...

  The BIDI optical module is a single-fiber bidirectional optical module, namely BiDi (Bidirectional). The conventional module is a dual-fiber module (connected by two optical fibers), and there are two optical fiber ports at the optical fiber interface: the transmitting port (TX) and the receiving port (RX), while the BIDI module is a single-fiber module with only one optical fiber port and one optical fiber port. Different optical signals are transmitted and received inside, so BIDI optical modules must be used in pairs. In terms of appearance, the BIDI module has only one port and is connected with only one optical fiber. The working principle of the BIDI optical module is to filter through the filter in the optical module (filter the unnecessary central wavelength), and complete the transmission of an optical signal of one wavelength and the reception of an optical signal of another wavelength at the same time. In order to achieve two-way communication, there must be The other...

With the rapid development of 5G, AI, big data, cloud computing and other services, the data center network is required to develop in the direction of high speed, high density, and efficient operation and maintenance. At present, 100G is widely used in China. This article introduces three mainstream solutions for 100G multimode optical modules. 1) 100G QSFP28 SR4 Interface type: multi-mode MPO-12F working principle: The center wavelength of 100GBASE-SR4 is 850nm, which can provide four independent transmission and reception channels, and the operating rate of each channel can reach 25G. The transmission distance is 70m when used with OM3 multimode fiber and 100m when used with OM4 multimode fiber. 2) 100G QSFP28 SRBD Interface type: multimode duplex LC working principle The transmission wavelength of the 100GBASE-SRBD optical module is 850nm and 900nm, and the SWDM wavelength division multiplexing technology is used to multiplex the optical signals of different wavelengths in the same...