Detailed Introduction And Application Solutions Of 40G QSFP+ Transceivers

In modern data centers and optical communication networks, 40G QSFP+ optical modules have gained wide acceptance due to their outstanding high bandwidth, stability, and efficiency. These modules can meet the rapidly growing demands for data transmission and adapt to the ever-changing network environment. Below are detailed descriptions of several key 40G QSFP+ transceivers along with their application scenarios.

Center Wavelength: 850nm

Interface Type: MPO/MTP

Fiber Type: Multi-mode

Supported Features: Built-in Digital Diagnostic Monitoring (DDM), allowing users to monitor the health status of the optical connection in real time. Hot pluggable, it can be easily exchanged without powering down the device.

Operating Temperature: 0°C to 70°C

Power Supply Voltage: 3.3V

Compliance: RoHS6 compliant

Transmission Distance: Maximum distances are 30 meters for OM2 MMF, 100 meters for OM3 MMF, and 150 meters for OM4 MMF.

Transmitter Optical Power: Ranges from -7.6 dBm to +0.5 dBm, ensuring stable performance under various environmental conditions.

Application Range: Primarily used for fiber connections in high-speed data centers, suitable for short-distance, high-bandwidth applications, such as rapid connections between servers.

Operating Principle: The QSFP-40G-SR4 converts electrical signals to optical signals using a laser array at the sending end. Upon reaching the receiving end, a photodetector array converts parallel optical signals back into parallel electrical signals.

Transmission Mechanism: This module transmits signals through four channels, with electrical signals first converted to optical signals by a laser array. The optical signals are then captured by a photodetector array and converted back to electrical signals, achieving 40G optical connectivity using MTP/MPO connectors.

Solution: The QSFP-40G-SR4 module operates at a wavelength of 850nm and is commonly employed in multi-mode applications. It has a transmission distance of 100m with OM3 and 150m with OM4 multi-mode fiber, primarily facilitating connections between network devices within data centers. It can utilize MTP/MPO fiber jumpers for direct connection between two 40G network devices and can also be used with MTP/MPO to LC fiber jumpers, allowing devices equipped with RJ45 ports or other interfaces to connect seamlessly.

Center Wavelength: 850nm

Interface Type: MPO/MTP

Fiber Type: Multi-mode

Supported Features: DDM technology enhances monitoring and management capabilities of the optical module.

Operating Temperature: 0°C to 70°C

Transmitter Optical Power: Ranges from -7.6 dBm to +0.5 dBm, similar to the 40G SR4 module.

Application Range: Widely used in 40G Ethernet, metropolitan optical transport networks (CE), and interconnections between large-scale data centers.

Transmission Distance: Maximum distances are 82 meters for OM2 MMF, 300 meters for OM3 MMF, and 400 meters for OM4 MMF.

Solution: The QSFP-40G-ESR4 operates at a wavelength of 850nm and connects with high-density MPO/MTP fiber jumpers, meeting the wiring needs of high-density data centers and providing users with an efficient optical network system.

Center Wavelength: 1310nm

Interface Type: MPO/MTP

Fiber Type: Single-mode

Supported Features: DDM technology providing practical diagnostic and monitoring capabilities.

Application Range: This module is commonly used with OS2 single-mode jumpers for 40G Ethernet, Fibre Channel, and PCIe interconnection solutions in environments requiring long-distance transmission.

Maximum Transmission Distance: Can reach up to 2 kilometers, providing greater flexibility for interconnections between data centers.

Center Wavelength: Utilizing CWDM coarse wavelength division multiplexing technology with a working wavelength of 1310nm. It features LC duplex connectors and is typically used with single-mode fiber, with a maximum transmission distance of 10 kilometers.

Interface Type: Duplex LC

Fiber Type: Single-mode

Supported Features: DDM technology enhances module adaptability to changing network environments.

Operating Temperature: 0°C to 70°C

Transmitter Optical Power: Ranges from -7 dBm to +2.3 dBm, suitable for long-distance, efficient transmission.

Application Range: Applicable for interconnections in data centers and metropolitan optical transport networks, especially in scenarios requiring a 10-kilometer transmission distance.

Compliance: RoHS6 compliant

Transmission Distance: The maximum transmission distance on single-mode fiber supports efficient data transfer over long distances, thus connecting two uplink ports effectively.

Center Wavelength: 1310nm

Interface Type: MPO

Fiber Type: Single-mode

Supported Features: Equipped with DDM functionality for monitoring.

Operating Temperature: 0°C to 70°C

Application Range: Mainly used for efficient connections between data centers and internet exchange points, facilitating rapid data flow.

Maximum Transmission Distance: Up to 10 kilometers, suitable for applications requiring high-quality signals and high bandwidth.

Center Wavelength: 1271nm, 1291nm, 1311nm, and 1331nm, compliant with telecommunications standards.

Interface Type: Duplex LC

Fiber Type: Single-mode

Supported Features: DDM technology for monitoring the health status of the optical module.

Operating Temperature: 0°C to 70°C

Transmitter Optical Power: Ranges from -2.7 to +4.5 dBm, ensuring efficient signal transmission.

Application Range: Widely used in data centers and metropolitan optical transport networks, especially suitable for long-distance transmission up to 40 kilometers.

Operating Principle: The 40G QSFP+ ER4 optical module is designed specifically for long-distance optical communication applications. This module converts four 10Gb/s electrical signals into four CWDM optical signals and multiplexes them into a single 40Gb/s optical transmission. Conversely, at the receiving end, it demultiplexes the 40Gb/s input optical signals into four CWDM channel signals and converts them back to four channels of output electrical signals.

Center Wavelength: 850nm and 900nm

Interface Type: Duplex LC

Fiber Type: Multi-mode

Supported Features: DDM for convenient device status monitoring.

Operating Temperature: 10°C to 70°C

Transmitter Optical Power: Ranges from -4 to +5 dBm.

Application Range: Utilizes dual 20G single-fiber bidirectional technology for data transmission and reception, reducing fiber cabling requirements, making it ideal for dense wiring environments.

Operating Principle: The 40G QSFP+ BiDi SR4 achieves 40G transmission using just two 20G channels. Each channel can transmit and receive signals over a multi-mode cable, but it is crucial that the 40G QSFP+ BiDi SR4 is used in pairs.

To achieve the 40G QSFP+ BiDi SR4 transmission, the following steps are required:

Combine four electrical signals with two 20G electrical signals.

Convert the two 20G electrical signals into two different wavelength 20G optical signals.

Transmit the differently-wavelengthed 20G optical signals through a single optical cable, allowing the 40G device to receive the optical signals and function as required.

Transmission Distance: With OM3 MMF, it transmits up to 100 meters and up to 150 meters with OM4 MMF, offering flexible cabling options for data centers.

The rapid development of technologies such as cloud computing, big data, and artificial intelligence has led to an increasing demand for high-speed, high-density, and highly reliable network communications. Against this market backdrop, the 40G QSFP+ optical module, as an advanced transmission technology, is set to see widespread application across data centers, telecommunications networks, and optical communications.

The 40G QSFP+ transceivers is suitable for various application scenarios, including:

Data Centers: As data centers expand in scale and data transfer rates increase, the 40G QSFP+ optical module has become an ideal transmission module for both internal connections and inter-datacenter links.

Metropolitan Area Networks (MAN)/Local Area Networks (LAN): In MANs and LANs, 40G QSFP+ transceivers can enhance network transmission speeds and expand network capacity.

5G Communication: 5G technology demands high network transmission rates and stability, where the 40G QSFP+ optical module can facilitate high-speed transmission within 5G communication networks.

Fibre Channel: In Fibre Channel applications, the 40G QSFP+ transceivers enables high-speed data transfer, improving the efficiency of storage area networks.

The 40G QSFP+ optical module series offers a range of products and flexible application scenarios, providing effective solutions for high-performance network connectivity. These optical modules support various types of optical fibers and transmission distance requirements, meeting the critical needs of modern data centers and optical communication networks, thus significantly advancing information technology progress and development. As network technologies continue to evolve, the 40G QSFP+ optical module will remain instrumental in fulfilling demands for high bandwidth and low latency, propelling forward the development of high-density, high-speed signal transmission and ushering in a new era for optical communications.