The 40G QSFP+optical module is a product developed on the basis of QSFP, with four independent transmission and reception optical signal channels that can simultaneously transmit data. Capable of providing high-density and low-power 40G Ethernet connectivity transmission applications for data centers, high-performance computing networks, enterprise core and distribution layers, as well as telecommunications operators. In this article, Yitian Optical Communication will introduce 40G QSFP+LR4 optical modules.
 
 

Working principle of 40G QSFP+LR4 optical module

The laser driver controls the arrival wavelength, and the optical signal is then combined together through a multiplexer for transmission. When approaching the receiving end, these transmitted signals are further decomposed into four channels with a transmission rate of 10Gbps by a demultiplexer, and then the PIN detector or transimpedance amplifier recovers the data stream before transmitting the optical signal.
 
 

How about 40G QSFP+LR4 10km optical module?

The laser driver of the 40G LR4 QSFP+optical module controls the arrival wavelength, and the optical signal is then combined together through a multiplexer for transmission. When approaching the receiving end, these transmitted signals are further decomposed into four channels with a transmission rate of 10Gbps by a demultiplexer, and then the PIN detector or transimpedance amplifier recovers the data stream before transmitting the optical signal. And it is generally used together with LC single-mode fiber jumpers, with a maximum transmission distance of 10km, and it has 4 data channels that can transmit data simultaneously. The advantages of 40G LR4 QSFP+optical module are high density, low cost, high speed, large capacity, and low power consumption.
 

40G QSFP+LR4 and 40G QSFP+PSM4 optical modules

The 40G QSFP+LR4 optical module adopts CWDM coarse wavelength division multiplexing technology, with a working wavelength of 1310nm. It uses LC duplex connectors and is usually used in conjunction with single-mode fiber, with a maximum transmission distance of 10km.
 
40G QSFP+PSM4 adopts MPO interface, with a working wavelength of 1310nm, usually used in conjunction with multimode fiber, with a maximum transmission distance of 10km.
   

40G QSFP+LR4 10km Optical Module Characteristics

1. Transmission data rate 11.3gbit/s/channel
2. Set trigger -8436QSFP+compatible
3. Hot swappable electrical interface
4. Differential AC coupled high-speed data interface
5. 4-channel PIN photodetector array
6. The maximum transmission distance on G.652 single-mode fiber is 10 kilometers
7. Maximum power consumption 2.5w
8. Isolation between module casing and internal connectors
9. Working temperature 0 ° C+70 ° C
10. 3.3V power supply voltage
11. Compliant with RoHS6
 

40G QSFP+LR4 Optical Module and Switch Solution

The direct connection between 40G QSFP+LR4 optical modules and switches can be achieved through LC duplex single-mode jumpers.
   
The direct connection between 40G QSFP+PSM4 CWDM optical modules and switches can be achieved through MPO fiber jumpers.
   
40G optical module application:
High speed interconnect servers between data centers and internet exchange points for single-mode applications, switches, routers, and transmission equipment, rack to rack, panel to panel, and 40G-LR4 Ethernet links for InfiniBand SDR, DDR, and QDR applications.
 
40G QSFP+LR4 optical modules play an important role in data centers, enterprise networks, and communication fields.
 

1. Data Center

In modern data centers, high-speed data transmission is crucial for ensuring stable business operations. 40G QSFP+LR4 optical modules can provide reliable and efficient data transmission solutions for data centers, especially suitable for cross building or long-distance data transmission.
 

2. Enterprise Network

Enterprise networks typically require high-speed data transmission to support daily business needs. 40G QSFP+LR4 optical modules can provide high-speed and stable data connections in enterprise networks, providing an efficient data communication environment for enterprises.
 

3. Communication field

40G QSFP+LR4 optical modules can be applied to long-distance communication links, providing efficient data transmission solutions for communication operators.
 
The 40G optical module has driven the development of high-density and high-speed signal transmission, ushering in a new era of optical communication.
 
SEESUO's QSFP+40G LR4 optical module is developed and produced based on the Ethernet IEEE802.3ba standard and SFF-8436 standard. The transmitting end of the QSFP+optical transceiver module converts 4 electrical signals into 4 CWDM optical signals and multiplex them into 1 optical fiber to achieve 40Gb/s transmission. At the receiving end, the module demulsifies the 40Gb/s optical signal into 4 CWDM optical signals and converts them into 4 electrical signals for output. The center wavelengths of the four CWDM channels are 1271nm, 1291nm, 1311nm, and 1331nm, respectively.