400G QSFP-DD

Upgrade Your Network with Ascentoptics 400G QSFP-DD!

Looking to enhance your network performance and capacity? Look no further than Ascentoptics, a leading manufacturer of cutting-edge networking solutions. Introducing our latest innovation, the 400G QSFP-DD module, designed to elevate your network to the next level. With advanced features and unbeatable reliability, our QSFP-DD is the ideal solution for high-bandwidth applications, data centers, and more. Take advantage of this limited-time offer and revolutionize your network today! Contact us now for pricing and availability. Upgrade your network with Ascentoptics’ 400G QSFP-DD module – the ultimate choice for superior performance and scalability.

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    Introducing 400G QSFP-DD from AscentOptics

AscentOptics offers a range of 400G QSFP-DD optical transceivers for high-speed networking applications. These transceivers support various link distances and come in different configurations, including SR8, DR4, LR, FR4, ER4, LR8, and ER8. With MPO-12 or LC connectors operating on different wavelengths, these transceivers are designed to meet the needs of different network setups.

400G QSFP56-DD

400G QSFP-DD Series

400G QSFP-DD SR8 850nm 100M Transceiver

The QDD-400M885-1HCM from Ascent Optics is an advanced hot-pluggable QSFP-DD optical transceiver ideal for high-speed 400G links over multimode fiber. Compliant with the QSFP-DD MSA specifications, this module operates at an impressive 53.125Gbps per lane, delivering outstanding performance. With a reach of up to 70m over OM3 and 100m over OM4 multimode fiber, it is designed to seamlessly integrate into multimode fiber systems. Experience reliable connectivity and optimal wavelength of 850nm. Upgrade your network with Ascent Optics’ QDD-400M885-1HCM transceiver today!
200G QSFP-DD SR8 850nm 100M MMF MPO-16 Transceivers
 

Product Details

Part No.QDD-400M885-1HCMForm FactorQSFP-DD
Data Rate400GDistance100M
Wavelength850nmOperation Temperature0 to 70°C (32 to 158°F)
ConnectorMTP/MPO-16Voltage3.3V
Cable TypeMMFDDMYes
Transmitter Type850nm VCSELReceiver TypePIN
TX Power-6.5~+4.0dBmReceiver Sensitivity< -7.9dBm
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• The QSFP-DD form factor is hot pluggable and supports an aggregate bit rate of 400Gb/s.
• Data rates up to 53.125Gbps per channel can be achieved over maximum link lengths of 70m for OM3 and 100m for OM4 cables.
• Power dissipation is low at less than 10W, with PAM4 modulation used for signal encoding.
• This product operates across a wide temperature range from 0°C to +70°C in commercial environments.

Application

• 400G Ethernet is the latest generation of high-speed data transfer technology, enabling up to 400 Gigabits per second of bandwidth.
• 400GBASE-SR8 is the primary option for 400G Ethernet in data centers, providing unprecedented levels of performance and reliability.
• This technology can help maximize efficiency and reduce latency, ensuring faster communication speeds that meet even the most demanding requirements.

400G QSFP-DD SR4 BiDi 150M Transceiver

The 400G QSFP-DD SR4 BiDi Module is a high-speed device that transmits and receives data at 400 Gbps. It uses two wavelengths of light and follows industry-standard protocols. With its ability to split data into four streams, it offers great flexibility for various applications. Compatible with OM4 MMF and QSFP-100G-SR1.2 modules, it ensures reliable and efficient data transmission up to 100 meters.
200G QSFP-DD 2X100G CWDM4 2km CS SMF Transceivers
 

Product Details

Part No.QDD-400BD89-1HCMForm FactorQSFP-DD
Data Rate400GDistance150M
Wavelength850nmOperation Temperature0 to 70°C (32 to 158°F)
ConnectorMTP/MPO-12Voltage3.3V
Cable TypeMMFDDMYes
Transmitter Type850nm VCSELReceiver TypePIN
TX Power-6.5~+4.0dBmReceiver Sensitivity< -7.9dBm
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• Compliant with the QSFP-DD MSA
• Offers an 8×53.125Gb/s electrical interface (400GAUI-8)
• Supports transmission up to 150m via OM5 MMF
• Runs on a single 3.3V power supply, with maximum power consumption of 12W
• RoHS-6 compliant, offering an environmentally friendly solution

Application

• 400G Ethernet technology offers unprecedented speed and performance for data centers.
• 400GBASE-SR8 is a widely accepted standard for high bandwidth applications.
• 400GBASE-SR8 helps streamline operations by providing ultra-fast networking solutions.
• 400GBASE-SR8 Ethernet is an effective tool to enhance data center communication capabilities.

400G QSFP-DD 4x100G DR4 1310nm 500m MPO Transceivers

Ascent Optics’ QDD-400S431-5HCM is specifically designed to support 400G Ethernet, making it ideal for data center links spanning up to 500m over single-mode fiber with FEC. These cutting-edge 400G QSFP-DD DR4 modules are fully compatible with IEEE 802.3bs 400GBASE-DR4 standards. On the transmission side, they effortlessly convert 8x 50G PAM4 electrical signals into 4x 100G PAM4 optical signals. Conversely, on the receiving side, they expertly convert 4x 100G PAM4 optical signals back into 8x 50G PAM4 electrical signals.
200G QSFP-DD 2x100G 4WDM-10 10km CS SMF Transceivers

Product Details

Part No.QDD-400S431-5HCMForm FactorQSFP-DD
Data Rate4×100G 400GbEDistance500M
Wavelength1310nmOperation Temperature0 to 70°C (32 to 158°F)
ConnectorMTP/MPO-12Voltage3.3V
Cable TypeSMFDDMYes
Transmitter Type1310nm EMLReceiver TypePIN
TX Power-2.9~+4.0dBmReceiver Sensitivity< -5.9dBm
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• 400 Gigabit Ethernet (425 Gbit/s) Transceiver with aggregate data rate of 425 Gbit/s
• Compliant with 53.125 GBd PAM4 x 4 lane 400GBASE-DR4 and 4 x 100GBASE-DR, each lane
• Compatible with 26.5625 GBd PAM4 x 8 lane 400GAUI-8 interface
• Reach of up to 500m over MPO-12 single mode fiber
• Form factor compliant with QSFP-DD MSA hardware specification
• 1310 nm EA-DFB optical transmitter and PIN photodetector optical receiver
• Power consumption of 12 W max. and operating case temperature of 0 to 70 deg C
• Hot Z-Pluggable to 76-pad QSFP-DD electrical connector
• RoHS10 compliant environment

Application

• 400G Ethernet IEEE 802.3bs 400GBASE-DR4 is a data center intraconnection standard.
• Offers speeds up to 400 Gb/s for ultrafast performance.
• Addresses the growing need for faster, more reliable data center connections.
• Ensures better efficiency, scalability, and compatibility.

400G QSFP-DD 4x100G DR4 1310nm 2km MPO Transceivers

The QDD-400S431-02CM 400G DR4+ QSFP-DD Optical Transceiver by Ascent Optics is a compact, high-speed, and energy-efficient solution designed for optical interconnects in data communications. This cutting-edge module supports 400GbE optical links over single-mode fiber or quad 100GbE optical links for breakout applications. It delivers exceptional bandwidth while minimizing power consumption, making it an ideal choice for demanding data center environments.
200G QSFP-DD 2x100G LR4 LWDM4 10km CS SMF Transceivers

Product Details

Part No.QDD-400S431-02CMForm FactorQSFP-DD
Data Rate4×100G 400GbEDistance2KM
Wavelength1310nmOperation Temperature0 to 70°C (32 to 158°F)
ConnectorMTP/MPO-12Voltage3.3V
Cable TypeSMFDDMYes
Transmitter Type1310nm EMLReceiver TypePIN
TX Power-2.4~+4.0dBmReceiver Sensitivity< -6.4dBm
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• Complies with IEEE 400GBASE-DR4 specifications and 4x 100G Lambda MSA optical interface standard, enabling 400GbE and 4x100GbE breakout applications up to 2 km.
• Electrical interface compliant with IEEE 802.3bs 400GAUI-8 (CDAUI-8) standard.
• Compact Type 2 QSFP-DD form factor for high density in networking equipment and cages while providing backward compatibility with single-mode fiber connectors and cable infrastructures.
• Operating temperature range of 0 to 70° C.
• CMIS-compliant management interface with full module diagnostics and control through I2C.

Application

• Optical interfaces provide an ideal solution for connecting large-scale cloud and enterprise data centers.
• This type of interface is suitable for Ethernet switches, routers, and transport networking equipment.
• The use of optical interfaces provides high-bandwidth capabilities while maintaining low latency.

400G QSFP-DD 4x100G PLR4 1310nm 10km MPO Transceivers

Ascent Optics’ QDD-400S431-10CM 400G QSFP-DD PLR4 optical transceiver modules are purpose-built to support 400G Ethernet, making them ideal for data center links spanning up to 10km across single mode fiber with FEC. These cutting-edge 400G QSFP-DD PLR4 modules are fully compatible with IEEE 802.3cu 100GBASE-LR1 standard. On the transmission side, they seamlessly convert 8x 50G PAM4 electrical signals into 4x 100G PAM4 optical signals, while on the receiving side they convert 4x 100G PAM4 optical signals back into 8x 50G PAM4 electrical signals.
200G QSFP-DD LR4 LWDM4 10km SMF LC Transceivers

Product Details

Part No.QDD-400S431-10CMForm FactorQSFP-DD
Data Rate4×100G 400GbEDistance10KM
Wavelength1310nmOperation Temperature0 to 70°C (32 to 158°F)
ConnectorMTP/MPO-12Voltage3.3V
Cable TypeSMFDDMYes
Transmitter TypeCWDM EMLReceiver TypePIN
TX Power-1.4~+4.5dBmReceiver Sensitivity< -9.1dBm
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• This hot-pluggable QSFP-DD form factor, full-duplex transceiver module features 4-channel 1310nm EML transmitter and PIN photo-detector array capable of a data rate of up to 106.25Gbps per channel.
• It boasts a Retimed 400GAUI-8 electrical interface, compliant with QSFP-DD MSA, CMIS 4.0 and IEEE 802.3cu 100GBASE-LR1 specifications with 10km reach over G.652 SMF at KP4-FEC modulation.
• It also has an MPO12/APC receptacle with 10W maximum power dissipation in a C-Temp operating temperature range and single 3.3V power supply.
• Additionally, it includes built-in digital diagnostic functionality and meets RoHS (lead free) requirements for added compliance assurance.

Application

• Data Center Interconnection utilizing 4x100G Ethernet is enabled by IEEE 802.3cu 100GBASE-LR1.
•The technology allows for high-speed, reliable connections between Data Centers.
•IEEE 802.3cu 100GBASE-LR1 supports up to 100Gbps transfer rate per pair of fibers, guaranteeing maximum performance.

400G QSFP-DD FR4 CWDM4 2km LC Transceivers

The QDD-400C431-02CL by Ascent Optics is an exceptional 400Gb/s QSFP-DD optical module specifically designed for optical communication applications spanning up to 2km. This module efficiently converts 8 channels of 50Gb/s (PAM4) electrical input data into 4 channels of CWDM optical signals. These optical signals are then multiplexed into a single channel, enabling smooth and reliable 400Gb/s optical transmission. Operating within the CWDM wavelength grid prescribed in ITU-T G.694.2, the central wavelengths of the 4 CWDM channels are 1271, 1291, 1311, and 1331 nm. Rest assured, this cutting-edge product offers unmatched performance and reliability for all your communication needs.
200G QSFP-DD LR4 LWDM4 10km SMF LC Transceivers

Product Details

Part No.QDD-400C431-02CLForm FactorQSFP-DD
Data Rate400GDistance2KM
WavelengthCWDM4Operation Temperature0 to 70°C (32 to 158°F)
ConnectorDuplex LCVoltage3.3V
Cable TypeSMFDDMYes
Transmitter TypeCWDM EMLReceiver TypePIN
TX Power-3.3~+3.5dBmReceiver Sensitivity< -7.7dBm
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• This module features the hot-pluggable QSFP-DD form factor and a full-duplex transceiver.
• It supports four channels of cooled CWDM EML TOSA and PIN ROSA, with data rates up to 106.25Gbps (53.125GBd PAM4) per channel.
• It offers a retimed 400GAUI-8 electrical interface, compliant with QSFP-DD MSA, CMIS 4.0, and IEEE 802.3cu 400GBASE-FR4 for up to 2km reach over SMF with KP4-FEC.
• The module is powered by a single 3.3V power supply and has a maximum power dissipation of 10W at a case operating temperature range of C-Temp, with built-in diagnostics and RoHS compliance (lead free).

Application

• 400G Ethernet IEEE 802.3cu 400GBASE-FR4 is an ideal data center intraconnection solution, providing high speed and reliable connections.
• With the latest technology, this product offers faster network speeds up to 400Gbps for data centers requiring high performance.
• This Ethernet has been designed to help reduce latency and increase scalability, making it a great choice for business networks.
• Rich features make this product an excellent choice, with long-term reliability and improved energy efficiency.• This high speed Ethernet solution offers increased bandwidth and performance over existing 100GbE technology.
• It could improve scalability for 10/25/40/50/100G Ethernet network deployments.
• 200GBASE-LR4 is the perfect choice for cloud data centers, government institutions, and high-end enterprise networks.

400G QSFP-DD LR4 CWDM4 10km LC Transceivers

The QDD-400L431-10CL from Ascent Optics is a versatile optical module that supports link lengths of up to 10km using single-mode fiber (SMF) with a duplex LC connector. It not only meets the requirements of IEEE 802.3cu for 400GBASE-LR4-6km, but also extends the reach to 10km. Compliant with the 100G Lambda MSA group 400G-LR4 requirements and the 400GAUI-8/CEI-56G-VSR-PAM4 standards, this module carries the 400 Gigabit Ethernet signal over four CWDM grid optical wavelengths. The device efficiently manages the multiplexing and demultiplexing of these wavelengths within its compact design. Additionally, it performs Forward Error Correction (FEC) on the host platform, ensuring reliable data transmission.
200G QSFP-DD LR4 LWDM4 10km SMF LC Transceivers

Product Details

Part No.QDD-400C431-10CLForm FactorQSFP-DD
Data Rate400GDistance10KM
WavelengthCWDM4Operation Temperature0 to 70°C (32 to 158°F)
ConnectorDuplex LCVoltage3.3V
Cable TypeSMFDDMYes
Transmitter TypeCWDM EMLReceiver TypePIN
TX Power-3.3~+3.5dBmReceiver Sensitivity< -7.7dBm
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• Supports a high bit rate of 425Gb/s
• Features Hot Pluggable QSFP-DD form factor
• Includes Digital Monitoring interface, compliant with QSFP-DD Rev 4.0
• Utilizes SFF-8636 Management Interface and SFF-8679: General Electrical standards
• Meets IEEE 802.3cd: Physical Layer Specifications and Management Parameters
• All-metal housing for superior EMI performance and resistance against 8KV direct contact voltage
• RoHS-10 compliant and lead-free
• Operates on a single +3.3V power supply with a case operating temperature between 0°C to +70°C

Application

• Data Center Interconnect offers 400G Ethernet and Infiniband interconnects for enterprise networking.
• Powerful network performance is enabled with optimized, customized solutions.
• Unrivaled bandwidth and throughput ensure the network stays reliable and resilient.

400G QSFP-DD ER4 LWDM4 40km LC Transceivers

The QDD-400L431-40CL module by Ascent Optics enables 400GBASE-ER4 transmission over standard G.652 single mode fiber (SMF) with LC connectors, supporting link lengths of up to 40km. It complies with the IEEE 802.3bs protocol and the 400GAUI-8/CEI-56G-VSR-PAM4 standard. This advanced device carries the 400 Gigabit Ethernet signal across four CWDM grid optical wavelengths, effectively managing the multiplexing and demultiplexing process.
200G QSFP-DD LR4 LWDM4 10km SMF LC Transceivers

Product Details

Part No.QDD-400L431-40CLForm FactorQSFP-DD
Data Rate400GDistance40KM
WavelengthLWDM4Operation Temperature0 to 70°C (32 to 158°F)
ConnectorDuplex LCVoltage3.3V
Cable TypeSMFDDMYes
Transmitter TypeEML LWDMReceiver TypePIN
TX Power+0.4~+6.5dBmReceiver Sensitivity< -16.5dBm
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• Supports a high bit rate of 425Gb/s
• Compliant to QSFP-DD Rev 4.0 and SFF-8636 & 8679 management interface standards
• Features Hot Pluggable QSFP-DD form factor
• Includes Digital Monitoring interface for performance monitoring
• All-metal housing for superior EMI performance
• Meets ESD requirements, resist 8KV direct contact voltage
• RoHS-10 compliant and lead-free
• Powered by Single +3.3V power supply
• Operates within a case temperature range of 0°C to +70°C

Application

• Data Center Interconnect: leveraging 400G Ethernet and Infiniband interconnects to enable enterprise networking.
• Benefits of leveraging 400G Ethernet and Infiniband for network interconnect include increased speed, reliability, and scalability.
• With DCI technology, businesses can easily facilitate communication between data centers and remote networks.

400G QSFP-DD LR8 LWDM8 10km Transceivers

The QDD-400L831-10CL by Ascent Optics is a 400 Gb/s QSFPDD optical module for 10km optical communication. It converts electrical input data to DWDM optical signals and achieves 400 Gb/s transmission. It also supports reverse operation for optical input and electrical output.
200G QSFP-DD LR4 LWDM4 10km SMF LC Transceivers

Product Details

Part No.QDD-400L831-10CLForm FactorQSFP-DD
Data Rate400GDistance10KM
Wavelength8x LWDMOperation Temperature0 to 70°C (32 to 158°F)
ConnectorDuplex LCVoltage3.3V
Cable TypeSMFDDMYes
Transmitter TypeEML LWDMReceiver TypePIN
TX Power-2.8~+5.3dBmReceiver Sensitivity< -6.6dBm (SECQ–8dBm)
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• QSFP-DD form factor transceiver module with up to 8-channel LWDM EML transmitter and PIN photo-detector array
• Data rate of up to 53.125Gbps (26.5625GBd PAM4) per channel
• Retimed 400GAUI-8 electrical interface, compliant with QSFP-DD MSA, CMIS 4.0 and IEEE 802.3bs 400GBASE-FR8
• Internal CDR circuits on both receiver and transmitter channels for reach of up to 10km over SMF with KP-FEC
• Connector type is Duplex LC receptacle; max power dissipation is 12.5W; case operating temp range: C-Temp; single 3.3V power supply
• Built-in digital diagnostic functionality; RoHS compliant (lead free)

Application

• 400G Ethernet IEEE 802.3bs 400GBASE-LR8 technology offers high speed and low latency for data center interconnection.
• The 400G Ethernet complies with the IEEE 802.3bs standard, providing a top speed of 400 Gigabits per second and ultra-low latency performance for data centers.
• The 400GBASE-LR8 solution enables reliable connectivity with high capacity to ensure fast, secure, and efficient data transfer between IT components in the data center.

400G QSFP-DD ER8 LWDM8 40km Transceivers

The QDD-400L831-40CL Module by Ascent Optics supports link lengths of up to 40 km over a standard pair of G.652 Single-Mode Fiber (SMF) using LC connectors. This module complies with the IEEE 400GBASE ER8 standard, with the 400 Gigabit Ethernet signal being transmitted across eight wavelengths. The device efficiently manages the multiplexing and demultiplexing of these eight wavelengths.
200G QSFP-DD LR4 LWDM4 10km SMF LC Transceivers

Product Details

Part No.QDD-400L831-40CLForm FactorQSFP-DD
Data Rate400GDistance40KM
Wavelength8x LWDMOperation Temperature0 to 70°C (32 to 158°F)
ConnectorDuplex LCVoltage3.3V
Cable TypeSMFDDMYes
Transmitter TypeEML LWDMReceiver TypePIN
TX Power-18.6~-4.4dBmReceiver Sensitivity< -16.1dBm (SECQ–17.5dBm)
ProtocolsQSFP-DD MSAWarranty3 years

Key Features

• The QSFP-DD form factor is hot-pluggable and provides 8 channels of full-duplex transceivers with a data rate up to 425Gbps.
• It is compliant with the QSFP-DD MSA and IEEE 802.3cn 400GBASE-ER8 standards, and it features 8x 53Gb/s PAM4 EML LWDM cooling transmitter and PIN receiver.
• Its 400GAUI-8 electrical interface reaches up to 40km over SMF with FEC and has duplex LC receptacles for connection.
• Additionally, the module has built-in digital diagnostic functions, operates from 0℃ to 70℃ in commercial cases, and operates on 3.3V power supply voltage while being RoHS compliant (lead free).

Application

• 400GBASE-ER8 Ethernet provides reliable high-speed network connections.
•Reduces cost and complexity when compared to cabling up multiple 10/40/100 GbE links.
•Perfect for cloud service providers, ISPs, data centers, and enterprise networks.
•Enables businesses to meet future bandwidth requirements with one solution.

400G QSFP56-DD
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    Why Choose Our 400G QSFP-DD

• 400G QSFP-DD is backward compatible with existing QSFP solutions, making upgrade simple and cost-effective.
• With a maximum bandwidth of 400Gbps it provides superior performance compared to 40Gbps/100Gbps/200Gbps offered by QSFP+/QSFP28/QSFP56 respectively.
• It allows for high-speed data transmission, making it an ideal choice for those looking to transfer large amounts of data quickly.
• Its electrical signal integrity and thermal management offer reliable performance and durability even under heavy use.

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Overview of 400G QSFP-DD Optical Transceiver Modules for SMF | High-Speed Data Transfer

The Quad Small Form-Factor Pluggable Double Density (QSFP-DD) is a revolutionary step in high-speed optical transceiver technology. Designed to overcome bandwidth limitations, it offers a significant increase in density, providing up to 400Gbps data transfer rates over single mode fiber (SMF). With eight channels of 50Gbps each, QSFP-DD modules are ideal for network operators seeking to efficiently manage the explosive growth in data traffic. By leveraging this high-performance technology, organizations can ensure exceptional network speed, reliability, and scalability, thereby enhancing overall operational efficiency.

What is a QSFP-DD Transceiver?

What is a QSFP-DD Transceiver?

A QSFP-DD transceiver is a high-speed optical module with a dual-density interface, which enables significantly higher data throughput. It combines multiple (typically eight) transmission and reception channels into a single package. Each channel operates independently at a data rate of up to 50Gbps, leading to a combined data rate of 400Gbps. QSFP-DD stands for “Quad Small Form-Factor Pluggable – Double Density,” reflecting its four-channel setup and high-density design. The transceiver is particularly suited for large-scale telecommunication networks and data centers where high-speed data transfer, minimal cabling, and scalable infrastructure are essential. The use of QSFP-DD transceivers marks a significant evolution in optical communication, enabling network operators to keep pace with escalating data demands.

Benefits of QSFP-DD Transceivers

Benefits of QSFP-DD Transceivers

QSFP-DD transceivers offer several distinct advantages, making them an excellent choice for network operators and businesses. 

  1. Increased Data Throughput: With the capacity to deliver up to 400Gbps, QSFP-DD transceivers considerably boost data transfer rates, ensuring high-speed communication and efficient data processing in demanding applications.
  2. Scalability: The high-density design of the QSFP-DD transceiver allows for greater port density, making it possible to add more connections without increasing the equipment’s overall footprint. This scalability is vital for accommodating future network growth.
  3. Reduced Cabling: By integrating eight channels into a single package, QSFP-DD transceivers greatly minimize the need for complex wiring and reduce clutter, leading to a more streamlined and manageable network infrastructure.
  4. Enhanced Efficiency: Using QSFP-DD transceivers can improve overall network performance and reliability, enhancing operational efficiency and potentially leading to lower maintenance and replacement costs.
  5. Future-Proof: QSFP-DD’s high-speed capabilities and scalability make it a future-proof solution that meets the increasing data demands of next-generation networks and applications.

Overview of 400G QSFP-DD Transceiver Modules

Overview of 400G QSFP-DD Transceiver Modules

QSFP-DD transceiver modules come in different variants, each designed to cater to unique networking requirements. These are the 400G QSFP-DD DR4, FR4, and LR4 transceivers.

400G QSFP-DD DR4 Transceiver

The 400G QSFP-DD DR4 Transceiver is designed for short-distance data center interconnect applications. It uses 4 parallel lanes that operate at 106.25 Gbps, giving a total data rate of 425Gbps. It supports link lengths of up to 500 meters over single-mode fiber (SMF) with MPO connectors.

400G QSFP-DD FR4 Transceiver

The 400G QSFP-DD FR4 Transceiver is ideal for intermediate-distance applications. Like the DR4, it also uses 4 parallel lanes, each operating at 106.25 Gbps, but caters to a more extended reach of up to 2 kilometers. It uses single-mode fiber (SMF) with LC connectors, making it a good choice for network operators seeking to upgrade their network infrastructure.

400G QSFP-DD LR4 Transceiver

The 400G QSFP-DD LR4 Transceiver is designed for long-reach applications and supports link lengths of up to 10 kilometers over single-mode fiber (SMF). It uses 4 parallel lanes, each operating at 103.125Gbps. It has an LC duplex connector and is suitable for extensive scale data center interconnections and telecom applications.

Specifications and Features

Specifications and Features

Form Factor and Port Density

The QSFP-DD module’s form factor is designed to accommodate an eight-lane electrical interface, effectively doubling the port density compared to QSFP28 modules. This translates into significantly lower costs per bit, enhanced network efficiency, and a high-density, high-bandwidth solution that is both future-proof and backward-compatible.

Single Mode Fiber and PAM4 Technology

QSFP-DD transceivers leverage Single Mode Fiber (SMF) and Pulse Amplitude Modulation (PAM4) technology to deliver high-speed data transmission. PAM4 signaling allows for higher data rates per lane, effectively doubling the bandwidth without increasing the required bandwidth of the electrical and optical components, making it a cost-effective solution for supporting higher transmission rates.

Optical Specifications for QSFP-DD Transceivers

The optical specifications for the QSFP-DD modules vary depending on the variant. The DR4 has a reach of up to 500 meters, the FR4 up to 2 kilometers, and the LR4 up to 10 kilometers over SMF. Depending on the transceiver type, the operating wavelength typically ranges from 1310nm to 1550nm. All variants support an aggregate data rate of 400Gbps, achieved through parallel transmission over multiple lanes.

Application and Connectivity

Application and Connectivity

Data Center Applications

QSFP-DD transceivers are ideally suited for high-speed data center interconnects. They can facilitate intra-data center communications, metro networking, and service provider applications, ensuring optimal efficiency and performance at higher data rates.

Connectivity Options for QSFP-DD Transceivers

The QSFP-DD modules support a wide array of connectivity options. These include direct attach cable (DAC) for short-range applications, active optical cable (AOC) for medium-range applications, and transceivers for short- and long-range applications. This flexibility enables network architects to design systems tailored to their specific needs, optimizing cost and performance.

QSFP-DD AOC and DAC Cables

QSFP-DD AOC and DAC cables are integral components for data center connectivity. DAC cables offer a passive, low-power option for short reaches up to 7 meters, while AOC cables provide a lightweight, flexible solution for reaches up to 100 meters. Both cable types offer a plug-and-play solution that simplifies installation and reduces maintenance overhead.

Comparison to QSFP28 Transceivers

Comparison to QSFP28 Transceivers

Advantages of 400G QSFP-DD over QSFP28

The 400G QSFP-DD transceivers provide significant advantages over QSFP28 models. Firstly, QSFP-DD modules offer four times the bandwidth, increasing data transfer capacity from 100G to 400 G. This makes them ideal for data-intensive applications and high-speed networking environments. Additionally, QSFP-DD transceivers retain the same form factor as QSFP28, allowing for higher port density and better scalability without additional equipment space.

Migration from QSFP28 to QSFP-DD

Transitioning from QSFP28 to QSFP-DD transceivers is beneficial for organizations looking to increase their network capacity without a significant overhaul of existing infrastructure. Since QSFP-DD maintains compatibility with QSFP28, migration can be achieved by simply replacing the transceivers, allowing for a gradual upgrade of network hardware that minimizes disruption. Furthermore, the longevity and scalability of QSFP-DD transceivers provide a more future-proof solution, ensuring that networks can adapt to increasing data demands over time.

Future Trends and Development

Future Trends and Development

Expansion of QSFP-DD MSA Group

The QSFP-DD MSA (Multi-Source Agreement) group is gaining traction, with the global technology industry recognizing the immense potential of QSFP-DD transceivers. The group is attracting an increasing number of industry-leading companies, driving innovation and standardization in high-speed networking technology.

Technological Advances in 400G QSFP-DD Transceivers

Technological advancements are driving the further evolution of 400G QSFP-DD transceivers. Innovations such as higher-order modulation and more efficient error correction codes enhance data throughput and signal integrity. The adoption of PAM4 (Pulse Amplitude Modulation) is providing significant improvements, doubling the data rate with the same bandwidth.

The potential of 400G QSFP-DD Optical Transceivers

The potential of 400G QSFP-DD optical transceivers lies in their ability to cater to the ever-growing demand for higher data rates and lower power consumption. They are positioned to be key enablers in advancing next-generation data centers, cloud computing, and high-performance computing applications. Their higher port density and backward compatibility make them a promising solution for future-proofing network infrastructure.

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Frequently Asked Questions

A: 400G QSFP-DD Optical Transceiver Modules are high-speed data transfer devices that use a form factor called QSFP-DD (Quad Small Form Factor Pluggable-Double Density) to provide dense and efficient optical connectivity for data centers.

A: QSFP-DD is an evolution of the QSFP form factor, with the main difference being that QSFP-DD has double the port density compared to QSFP. QSFP-DD modules can support higher data rates, such as 400G, while QSFP modules are limited to lower data rates.

A: There are several types of 400G QSFP-DD transceiver modules, including DR4 (40km reach), FR4 (2km reach), and LR4 (10km reach). Each type has specific specifications and is designed for different applications and optical cable lengths.

A: The maximum reach of a 400G QSFP-DD transceiver module depends on the specific type. For example, a DR4 module has a reach of up to 40km, while an FR4 module has a reach of up to 2km, and an LR4 module has a reach of up to 10km.

A: PAM4 modulation is a method of encoding data in optical signals. It allows for higher data rates by using four amplitude levels instead of the two levels used in traditional binary encoding. PAM4 modulation is used in 400G QSFP-DD transceivers to achieve faster data transfer rates.

A: The QSFP-DD MSA (Multi-Source Agreement) Group is an industry organization that develops and promotes standards for the QSFP-DD form factor and related technologies. The MSA Group ensures interoperability and compatibility between different manufacturers’ QSFP-DD products.

A: An AOC (Active Optical Cable) is a cable that uses optical fibers to transmit data, while a DAC (Direct Attach Copper) cable uses copper wires. AOC cables typically have longer reach but are more expensive, while DAC cables have shorter reach but are more cost-effective.

A: A 400G QSFP-DD transceiver module typically has four channels of parallel optical signals, each carrying a 100G Ethernet signal. This allows for a total data transfer rate of 400G.

A: No, a 400G QSFP-DD transceiver module cannot be directly plugged into a QSFP28 port. QSFP-DD modules have a different form factor and are not backward-compatible with QSFP28 ports. However, there are adapters available that can convert a QSFP-DD port to a QSFP28 port.

A: A 400G QSFP-DD transceiver module enables high-speed data transfer between switches, routers, and servers in a data center. It converts electrical input data into parallel optical signals, allowing for the transmission of 400 gigabit Ethernet signals over optical fibers.

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