Optical modules are crucial components in fiber optic communication, consisting of optoelectronic devices, functional circuits, and optical interfaces, playing a role in optoelectronic conversion. The market is flooded with a large number of optical modules, both in terms of packaging and speed, experiencing significant development.

Working Principle of 100G QSFP28 SR4 Optical Module

The 100G QSFP28 SR4 optical module mainly consists of a first-clock data recovery module, array drive module, laser transmission module, optoelectronic conversion module, and telecommunication signal processing module. Let's briefly analyze its working principle.

Firstly, the data recovery module processes the input 100G electrical signals for data recovery, then inputs the processed electrical signals to the array drive module.

The array drive module then modulates and demodulates the received electrical signals before transmitting them to the laser transmission module.

In the laser transmission module, electrical signals are converted into optical signals, which are then coupled into the optical fiber.

The coupled optical signals are transmitted to the optoelectronic conversion module, where they are once again converted into electrical signals and output to the telecommunication signal processing module.

Finally, the telecommunication signal processing module sequentially converts the electrical signals into voltage, amplifies them, and outputs them to the main control end.

Working Principle of 40G QSFP+ SR4 Optical Module

The working principle of the 40GBASE-SR4 optical module: when transmitting signals at the sending end, electrical signals are first converted into optical signals by the laser array, and when receiving signals at the receiving end, the optoelectronic detector array converts parallel optical signals into parallel electrical signals.

Highlights of 100G QSFP28 SR4 Optical Module Products

The low-power QSFP28 100G SR4 optical module features a 4-channel full-duplex transceiver module, with low power consumption <2.5W, QSFP hot-pluggable packaging, a maximum transmission distance of 70m for OM3 multimode fiber (MMF), and 100m for OM4 MMF. The fiber interface can accept single MPO. With low power consumption <2.5W, digital diagnostic functions can be obtained through the I2C interface specified by QSFP28 MSA. This optical module is RoHS compliant.

Product Characteristics of 40G QSFP+ SR4 150m Optical Module

        ▶4-Channel Full-Duplex Transceiver Module

        ▶Data rate per channel: 10.5 Gbps

        ▶4-channel 850nm VCSEL array

        ▶4-channel PIN photodetector array

        ▶Low power consumption <1.5 W

        ▶Hot-pluggable QSFP packaging

        ▶OM3 multimode fiber (MMF) @ 100 meters and OM4 MMF @ 150 meters

        ▶Single MPO connector socket

        ▶Built-in digital diagnostic functionality

        ▶Operating temperature: 0°C to +70°C

        ▶3.3 V power supply voltage

        ▶Compliant with RoHS 6 (lead-free)

        ▶Applications of 100G QSFP28 SR4 Optical Module

Walsun 100G QSFP28 SR4 optical module is primarily used in high-speed optical modules for data centers. It supports IEEE 802.3bm 100GBASE SR4 and 40GBASE SR4, as well as Infiniband FDR/EDR 14x/Enhanced data rates.

Optical modules are crucial components in fiber optic communication, comprising optoelectronic devices, functional circuits, and optical interfaces, playing a role in optoelectronic conversion. The market is flooded with a large number of optical modules, experiencing significant development in both packaging and speed. In this article, Yifeiyang Communication will provide detailed introductions to the 100G SR4 optical module and 40G SR4 optical module.

Working Principle of 100G QSFP28 SR4 Optical Module

The 100G QSFP28 SR4 optical module mainly consists of a first-clock data recovery module, array drive module, laser transmission module, optoelectronic conversion module, and telecommunication signal processing module. Let's briefly analyze its working principle.

The data recovery module processes the input 100G electrical signals for data recovery, then inputs the processed electrical signals to the array drive module.

The array drive module modulates and demodulates the received electrical signals before transmitting them to the laser transmission module.

In the laser transmission module, electrical signals are converted into optical signals, which are then coupled into the optical fiber.

The coupled optical signals are transmitted to the optoelectronic conversion module, where they are once again converted into electrical signals and output to the telecommunication signal processing module.

Finally, the telecommunication signal processing module sequentially converts the electrical signals into voltage, amplifies them, and outputs them to the main control end.

Working Principle of 40G QSFP+ SR4 Optical Module

The working principle of the 40GBASE-SR4 optical module involves converting electrical signals into optical signals by the laser array at the transmission end and converting parallel optical signals into parallel electrical signals by the optoelectronic detector array at the reception end.

Highlights of 100G QSFP28 SR4 Optical Module Products

The low-power QSFP28 100G SR4 optical module features a 4-channel full-duplex transceiver module with low power consumption <2.5W, QSFP hot-pluggable packaging, a maximum transmission distance of 70m for OM3 MMF and 100m for OM4 MMF, and a fiber interface that accepts single MPO. With low power consumption <2.5W, digital diagnostic functionality can be obtained through the I2C interface specified by QSFP28 MSA. This optical module is RoHS compliant.

40G QSFP+ SR4 150m Optical Module Product Features

        ▶4-channel full-duplex transceiver module

        ▶Data rate per channel: 10.5 Gbps

        ▶4-channel 850nm VCSEL array

        ▶4-channel PIN photodetector array

        ▶Low power consumption <1.5 W

        ▶Hot-pluggable QSFP packaging

        ▶OM3 multimode fiber (MMF) @ 100 meters and OM4 MMF @ 150 meters

        ▶Single MPO connector socket

        ▶Built-in digital diagnostic functionality

        ▶Operating temperature: 0°C to +70°C

        ▶3.3 V power supply voltage

        ▶Compliant with RoHS 6 (lead-free)

        ▶Applications of 100G QSFP28 SR4 Optical Module

Wansun 100G QSFP28 SR4 optical module is primarily used in high-speed optical modules for data centers. It supports IEEE 802.3bm 100GBASE SR4 and 40GBASE SR4, as well as Infiniband FDR/EDR 14x/Enhanced data rates.

Applications of 40G SR4 Optical Module

The 40GBASE-SR4 optical module adopts MTP/MPO interface, operates at a wavelength of 850nm, and is generally used in multimode applications. When used with OM3/OM4 multimode fiber, the transmission distances are 100m and 150m respectively. It is mainly used to connect network equipment within data centers. The 40GBASE-SR4 optical module not only enables the connection between two 40G network devices using MTP/MPO fiber jumpers but also can be used with MTP/MPO to LC fiber jumpers to connect 40G network devices with 10G network devices.

Additional Learning Hub Resources

40G QSFP+ AOC Active Optical Cable Overview 

What is the difference between 40G QSFP+ singlemode and QSFP+ multimode? 

QSFP28 Optical Module Wiki