What are The Types and Application of 800G Optical Transceivers?
What are The Types and Application of 800G Optical Transceivers?
As the demand for faster data transmission continues to surge, 800G optical transceiver has attracted widespread attention due to their high bandwidth, fast transmission rate, excellent performance, high density, and future expansion. In this article, we will outline the various types of 800G transceiver module and their applications to help you make a better choice when selecting 800G optical module.
Types of 800G Optical Modules
800G=8*100G=4*200G. Therefore, based on the single-channel rate, 800G fiber transceiver can be roughly divided into single-channel 100G and 200G. The following figure shows the matching architecture. Single-channel 100G transceiver module is relatively easier to implement, while 200G optical modules have higher requirements for optical devices and require a gearbox for conversion. This article will mainly introduce single-channel 100G modules.
Single-mode 800G Optical Transceiver
800G single-mode optical module is suitable for long-distance optical fiber transmission and can cover a wider network range.
800G DR8, 800G PSM8 and 800G 2xDR4
The internal architectures of these three standards are similar, with 8 transmit and 8 receive channels, a single channel rate of 100Gbps, and 16 optical fibers required.
The 800G DR8 fiber transceiver adopts 100G PAM4 and 8-channel single-mode parallel technology, uses single-mode fiber, and has a transmission distance of up to 500m. It is usually used in data centers, 800G-800G, 800G-400G, and 800G-100G interconnections. AFOPLUS 800G QSFP-DD DR8 provides excellent performance for 800G-BASE Ethernet applications, providing up to 800 Gigabits per second of throughput through eight pairs of single-mode fiber (SMF) with MPO-16C APC connectors, and can extend up to 500m. The fiber module is fully compliant with IEEE P802.3ck, IEEE 802.3cu, and QSFP-DD MSA standards to ensure seamless compatibility and reliable operation.
The 800G PSM8 optical module adopts CWDM technology, has 8 optical channels, each with a transmission rate of 100Gbps, and supports a transmission distance of 100m, which is very suitable for long-distance transmission and fiber resource sharing.
800G 2DR4 refers to 2 "400G-DR4" interfaces. It is equipped with 2 MPO-12 connectors, without the need for fiber branch cables, and each 800G transceiver module can realize 2 physically different 400G-DR4 links. As shown in the figure below, this optical module can be connected to a 400G DR4 optical module, supporting a transmission distance of up to 500m, suitable for data center upgrades.
800G 2FR4/2LR4/FR4/FR8
The 800G FR and LR in the name stand for Fixed Reach and Long Reach, respectively, indicating fixed and longer transmission distances.
800G 2xFR4 and 800G 2xLR4 are two additional standards with similar internal structures. They consist of 4 wavelengths and operate at a single channel rate of 100 Gbps. By using Mux, the number of optical fibers required for this optical module is reduced to 4, as shown in the figure below. These standards are upgraded versions of 400G FR4 and LR4 transceiver module. They use CWDM4 wavelengths of 1271/1291/1311/1331nm. 800G 2xFR4 supports a transmission distance of 2km, and 800G 2xLR4 supports a transmission distance of 10km. The optical interfaces of these standards use dual CS or duplex LC interfaces. They are all suitable for 800G Ethernet, breakout 2x400G FR4/LR4, data centers, and cloud networks.
AFOPLUS provides 800G 2xFR4 and 800G 2xLR4 modules in OSFP form factor. AFOPLUS800G 2FR4 optical module is designed to achieve up to 2km 800GBASE Ethernet throughput over single mode fiber (SMF) with duplex LC connector. AFOPLUS800G 2LR4 optical module supports up to 10km link length over single mode fiber (SMF) with dual LC connector. Both products have been rigorously tested and have excellent performance.
The 800G FR4 fiber module uses 4 wavelengths and PAM4 technology, with a single channel rate of 200Gbps and requires 2 optical fibers, as shown in the figure below. This transceiver module supports a transmission distance of 2km and is generally used in data center interconnection, high-performance computing, storage networks, etc.
Finally, the 800G FR8 fiber module uses 8 wavelengths, each wavelength runs at 100Gbps, as shown in the figure below. The module requires two optical fibers and supports a transmission distance of 2km. In addition, 800G FR8 transceiver can provide higher transmission capacity, and common applications include wide area networks, data center interconnection, etc.
Multi-mode 800G Optical Transceiver
When the transmission distance is less than 100m, there are mainly two standards for 800G optical modules for multi-mode applications.
800G SR8
The 800G SR8 optical module uses VCSEL technology, with a wavelength of 850nm and a single-channel rate of 100Gbps PAM4. It requires the use of 16 optical fibers. This can be seen as an enhanced version of 400G SR4, with twice the number of channels as 400G SR4. The transceiver module uses MPO16 or dual MPO-12 optical interfaces, as shown in the figure below. 800G SR8 fiber module is typically used for 800G Ethernet, data center links, or 800G-800G interconnects.
800G SR4.2
This solution uses two wavelengths, 850nm and 910nm, to achieve single-fiber bidirectional transmission, commonly known as bidirectional transmission. The module contains a DeMux component to separate the two wavelengths. The single-channel rate is 100Gbps PAM4, requiring a total of 8 optical fibers, which is half the number of optical fibers required for SR8.
Unleashing Potential: Applications of 800G Optical Transceivers
In the field of high-performance networks, the development of 800G optical transceivers has ushered in a new era of possibilities.
Data Center Connectivity
Data center interconnect is one of the main areas where 800G optical transceivers play an important role. With InfiniBand, these modules facilitate seamless communication between data centers, powering the backbone of modern interconnect infrastructure.
High-Performance Computing
In the field of high-performance computing, where processing requirements are constantly escalating, the efficiency of 800G optical transceivers has become a game changer. These modules ensure fast data transmission, reduce latency, and optimize overall system performance.
5G and Communication Networks
The surge in 5G and communication networks requires not only speed but also reliability. The emergence of 800G QSFP and QSFP-DD optical modules is designed to meet the needs of next-generation communication networks. Their advanced features support 5G architecture and ensure the stability and responsiveness of network infrastructure.