The 40G QSFP+ optical module is a product developed on the basis of QSFP. It has four independent optical signal transmitting and receiving channels, which can transmit data at the same time. It can provide high-density and low-power 40G Ethernet connection transmission applications for data center, high-performance computing network, enterprise core layer and distribution layer, as well as telecom operators.

Today, ETU-Link will introduce 40G QSFP+ LR4 optical module.

Working principle of 40G QSFP+ LR4 optical module

The laser driver controls the wavelength of arrival, and the optical signal is transmitted together through the multiplexer. At the receiving end, these transmitted signals are divided into four channels with transmission rate of 10Gbps by demultiplexer. Then pin detector or mutual resistance amplifier recovers the data stream and transmits the optical signal.

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

①The 40G QSFP+ LR4 optical module adopts CWDM coarse wavelength division multiplexing technology, and its working wavelength is 1310nm. It adopts LC duplex connector, which is usually used together with single-mode fiber, and the maximum transmission distance is 10km.

②40G QSFP+ PSM4 adopts MPO interface, with working wavelength of 1310nm. It is usually used together with single-mode fiber, and the maximum transmission distance is 10km. The 40G QSFP+ LR4 optical module of ETU-Link has the advantages of high density, low cost, high speed, large capacity and low power consumption.

40G QSFP+ LR4 10km features:

v Transmission data rate 11.3gbit/s/channel

v Set trigger-8436 SFP+ compatible

v Hot plug connector

v Differential AC-coupled high speed data interface

v 4-channel PIN photodetector array

v The maximum transmission distance on G.652 single-mode fiber is 10km

v Maximum power consumption: 2.5w

v Module housing isolated from internal connector

v Working temperature: 0°C+ 70°C

v 3.3v supply voltage

v Conform to RoHS6

40G QSFP+ LR4 optical module and switch solution

①The direct connection between 40G QSFP+ LR4 optical module and switch can be achieved by LC duplex single-mode jumper.

②The direct connection between 40G QSFP+ PSM4 CWDM optical module and switch can be achieved through MPO fiber jumper.

40G optical module application:

High speed interconnection server, rack to rack, panel to panel and 40G-LR4 Ethernet link Infiniband SDR, DDR and QDR applications between data center and Internet switching point, switch, router and transmission equipment for single-mode applications.

40G optical module promotes the development of high-density and high-speed signal transmission, which makes optical communication enter a new era.