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.
JTOPTICS® 400G QSFP112 AOC (active optical cable) is a 400 Gb/s parallel active optical cable, which transmits parallel 8×50 Gb/s PAM4 signals over multi-mode fiber (MMF) cables up to 100m. It is compliant with QSFP112 MSA and the CMIS 4.0. The 400G QSFP112 AOC cables supports eight electrical inter..
400G
QSFP112 DR4 transceiver modules are specifically engineered for use in 400
Gigabit Ethernet (GbE) links, supporting data transmission over distances of up
to 500 meters on single-mode fiber (SMF). These modules adhere to several key
standards, including the QSFP112 Multi-Source Agreement (MSA),..
400G
QSFP112 FR4 transceiver modules are designed to support 400 Gigabit Ethernet
(GbE) links, enabling high-speed data transmission over distances of up to 2 km
on single-mode fiber (SMF). These transceivers are built to meet rigorous
industry standards, ensuring compatibility and interoperability ..
400G
QSFP112 SR4 transceiver modules are designed for use in 400 Gigabit Ethernet
links on up to 100m of OM4 multi-mode fiber. They are compliant with the QSFP112
MSA and IEEE 802. 3db.The optical transceiver is RoHS compliant. Hot-pluggable
QSFP112 Type 2 form factorSupports
425Gb/s aggr..
JTOPTICS 400G QSFP-DD to 4x 100G QSFP28 PCC (Passive Copper Cable), also known as Direct Attach Copper (DAC) cable or Twinax cable, provides robust connections between 400G Ethernet and 100G Ethernet systems. Each cable consists of four lanes each operating at data rates of up to 100Gb/s (PAM4). Thi..
The Juniper QDD-4X100G is a 400G DAC (Direct Attach Cable) designed to break out a QSFP-DD (Quad Small Form-Factor Pluggable Double Density) connection into four QSFP28 ports, supporting 4x100G networking. This passive Twinax copper cable provides efficient and cost-effective short-distance intercon..
The Mellanox/Nvidia MCP7F60-W is a 400G DAC (Direct Attach Cable) that breaks out a single QSFP-DD (Quad Small Form-Factor Pluggable Double Density) connection into four QSFP28 interfaces, enabling connectivity between 400G and 4x100G network devices. This passive Twinax copper breakout cable is ide..
JTOPTICS® 400G OSFP AOC (active optical cable) is a 400 Gb/s parallel active optical cable, which transmits parallel 8×50 Gb/s PAM4 signals over multi-mode fiber (MMF) cables up to 100m. It is compliant with OSFP MSA and the CMIS 4.0. The 400G OSFP AOC cables supports eight electrical interface lane..
400G
OSFP DR4 transceiver modules are designed to support 400 Gigabit Ethernet (GbE)
links, enabling high-speed data transmission over single-mode fiber (SMF) for
distances of up to 500 meters. These advanced modules adhere to several
industry standards, ensuring broad compatibility and seamless int..
400G OSFP SR4 transceiver modules are designed to facilitate 400 Gigabit
Ethernet (GbE) links over short distances, supporting up to 100 meters using
OM4 multimode fiber (MMF). These advanced modules adhere to industry standards,
ensuring broad compatibility and seamless integration into existing ne..
400G
OSFP SR8 transceiver modules are specifically engineered to support 400 Gigabit
Ethernet (GbE) links over multimode fiber (MMF) for distances up to 100 meters.
These high-performance transceivers are built to conform to industry standards,
ensuring compatibility and seamless integration with a ..
JTOPTICS 00G QSFP-DD to 8x 50G SFP56 PCC (Passive Copper Cable), also known as Direct Attach Copper (DAC) cable or Twinax cable, provides robust connections between 400G Ethernet (2x 200GE) and 50G Ethernet systems. Each cable consists of eight lanes each operating at data rates of up to 50Gb/s (PAM..