400G Transceivers Guide
400G
transceivers, Active Optical Cables (AOCs), and Direct Attach Copper (DAC)
cables are critical components for high-speed networking in modern data
centers, enterprise networks, and high-performance computing environments.
These components support data rates of up to 400 Gigabits per second (Gbps),
providing the bandwidth necessary to handle today's data-intensive
applications.
Unleashing Ultra-High-Speed Connectivity with 400G Transceivers
JTOPTICS® 400G transceivers are engineered for next-generation data center environments requiring massive bandwidth and ultra-low latency. Ideal for hyperscale, cloud, and AI-driven infrastructures, they support high-density switch interconnects and accelerate data flow across core and spine-leaf networks. With optimized power efficiency and advanced modulation, 400G modules future-proof your network for data-intensive workloads and rapid scalability.
Frequently Asked Questions
400G QSFP-DD SR8 Transceivers
“SR” refers to 100m reach using multi-mode fiber, and “8” implies there are 8 optical channels. Each of the 8 optical channels from an SR8 module are carried on separate fibers, resulting in a total of 16 fibers (8 Tx and 8 Rx). Each optical channel operates at 50Gb/s. The SR8 module uses an MPO-16 APC connector to connect to 8 fiber pairs. The SR8 module can be configured for 400G- SR8, 2x 200G-SR4 and (operating at ½ rate) 2x 100G-SR4.
400G QSFP-DD SR4 Transceivers
“SR” refers to 50m reach using multimode fiber, and the “4” implies there are 4 optical channels. Each of the 4 optical channels are carried on separate fibers, resulting in a total of 4 pairs of fibers. Each optical channel operates at 100Gb/s. There are two IEEE defined standards for 100G/wave MMF optics: 400GBASE-SR4 (for 100m reach over parallel OM4 MMF), and 400GBASE-VR4 (for 50m reach over parallel OM4 MMF).
400G QSFP-DD DR4, XDR4 and PLR4 Transceivers
“DR” / “XDR” / “LR” refer to 500m / 2km / 10km reach using single-mode fiber, and “4” implies there are 4 optical channels. Each of the 4 optical channels are carried on separate fibers, resulting in a total of 4 pairs of fibers. Each optical channel operates at 100Gb/s. The DR4 / XDR4 / PLR4 modules use the widely deployed MPO-12 APC SMF connector to connect to 4 fiber pairs.
400G QSFP-DD FR4 / LR4 Transceivers
“FR” / “LR” refers to 2km / 10km reach using single-mode fiber, and “4” implies there are 4 optical channels. Unlike the DR4 and SR8, all 4 optical channels from an FR4 / LR4 are multiplexed onto one fiber, resulting in a total of 2 fibers from the module (1 Tx and 1 Rx). Each optical channel operates at 100Gb/s. The modules use a duplex LC optical connector.
The Arista AOC-O-O-400G is a 400G OSFP Active Optical Cable (AOC) designed for high-speed data transmission in data centers and high-performance computing environments. This cable connects two OSFP (Octal Small Form-Factor Pluggable) ports and supports 400Gbps Ethernet speeds over OM3 multimode fibe..
The Arista CAB-D-8S-400G is a 400G Direct Attach Cable (DAC) that breaks out a QSFP-DD (Quad Small Form-Factor Pluggable Double Density) connection into eight SFP56 ports, enabling 8x50G high-speed links. Designed for short-range data transmission in high-performance environments, it utilizes passiv..
The Arista OSFP-400G-DR4 is a cutting-edge 400GBASE-DR4 optical transceiver module designed for high-speed data communication. Operating at a wavelength of 1310nm and utilizing PAM4 modulation, it achieves a transmission distance of up to 500 meters over single-mode fiber (SMF). This OSFP transceive..
The Arista OSFP-400G-SRBD is an advanced 400GBASE-SR4.2 optical transceiver designed for high-speed data transmission over multimode fiber (MMF). Operating at an 850nm wavelength with PAM4 modulation, it delivers a transmission reach of up to 100 meters. This OSFP transceiver supports 4x 100G-SR con..
The Arista OSFP-400G-SR8 is a high-performance 400GBASE-SR8 optical transceiver designed for efficient data transmission over multimode fiber (MMF). Operating at an 850nm wavelength with PAM4 modulation, it provides a reach of up to 100 meters. This OSFP transceiver supports 8x 50G-SR configurations..
The Mellanox/Nvidia MCP7F80-W is a 400G Direct Attach Cable (DAC) designed to break out a QSFP-DD (Quad Small Form-Factor Pluggable Double Density) connection into eight SFP56 ports, supporting 8x50G links. This passive Twinax copper cable offers high-speed, low-latency interconnects for short-dista..
400G
QSFP-DD DR4 optical module is a hot-pluggable transceiver built using advanced
silicon photonics integration technology. This module is specifically designed
for 400GBASE-DR4 Ethernet links within data centers. It utilizes 100G PAM4
modulation and 4-way single-mode parallel technology, supporti..
400G
QSFP-DD FR4 transceiver modules are designed to support 400 Gigabit Ethernet
(GbE) links over single-mode fiber (SMF) for distances up to 2 km. These
transceivers leverage advanced technology to ensure reliable high-speed data
transmission and are well-suited for use in data centers and enterpr..
400G
QSFP-DD LR4 transceiver modules are meticulously engineered to support 400
Gigabit Ethernet (GbE) links over single-mode fiber (SMF) with a remarkable
reach of up to 10 km. These transceivers are at the forefront of optical
networking technology, offering robust capabilities for long-distance d..
400G
QSFP-DD SR8 transceiver modules are engineered to facilitate 400 Gigabit
Ethernet (GbE) connections over multimode fiber (MMF) for distances up to 100
meters. These advanced transceivers are built to conform to the QSFP-DD
Multi-Source Agreement (MSA) and the IEEE 802.3cd/cm standards, ensuring..
JTOPTICS® 400G QSFP-DD Breakout AOC (Active Optical Cable) assemblies include 400G QSFP-DD to 2x 200G QSFP56 breakout AOC. The module integrates eight parallel lanes on 400G end and fan-out to two parallel lanes on each 200G end. Each lane operate 53.125Gb/ps PAM4 modulation signal. These 400G..
The HPE Aruba P45733-B is a high-performance 400G to 2x200G Active Optical Cable (AOC) designed for seamless connectivity in data centers and high-bandwidth networking environments. This cable features a QSFP-DD (Quad Small Form-Factor Pluggable Double Density) connector on one end and two QSFP56 (Q..