SMF 40G QSFP+ ER4 40km 1310nm DOM Optical Transceiver Module Dual LC
40G QSFP+ ER4 40km SMF 1310nm DOM Optical Transceiver Module Dual LC
Description of Optical Module
40GBASE LR4 QSFP+ is designed to operate over single-mode fiber system using 4X10 CWDM channel in 1310 band and links up to 10km.The module converts 4 inputs channel of 10Gb/s electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 40Gb/s optical transmission. Reversely, on the receiver side, the module optically de-multiplexes a 40Gb/s input into 4 CWDM channels signals, and converts them to 4 channel output electrical data.The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm. It contains a duplex LC connector for the optical interface and a 38-pin connector for the electrical interface. Single-mode fiber (SMF) is applied in this module. This product converts the 4-channel 10Gb/s electrical input data into CWDM optical signals (light), by a 4-wavelength Distributed Feedback Laser (DFB) array. The 4 wavelengths are multiplexed into a single 40Gb/s data, propagating out of the transmitter module via the SMF.
Specification of Optical Module
| Part Number | Product Description |
| QSFP-40G-SR4 | QSFP+, 40Gb/s, 40GBASE-SR4, MMF, 850nm, 100M |
| QSFP-40G-CSR4 | QSFP+, 40Gb/s, 40GBASE-SR4, MMF, 850nm, 300M/400M |
| QSFP-40G-LR4 | QSFP+, 40Gb/s, 40GBASE-LR4, SMF, 1310nm, 10KM |
| QSFP-40G-ER4 | QSFP+, 40Gb/s, 40GBASE-ER4, SMF, 1270~1330, LC CWDM4 |
| QSFP-100G-SR4 | QSFP+, 100Gb/s, 100GBASE-SR4, MMF, 850nm, 100M |
| QSFP-100G-LR4 | QSFP+, 100Gb/s, 100GBASE-LR4, SMF, 1310nm, 10KM |
Features of Optical Module
Up to 11.2Gbps per channel bandwidth
Aggregate bandwidth of > 40Gbps
Duplex LC connector
Compliant with 40G Ethernet IEEE802.3ba and 40GBASE-ER4 Standard
QSFP MSA compliant
APD photo-detector
Up to 40 km transmission
Compliant with QDR/DDR Infiniband data rates
Single +3.3V power supply operating
Application of Optical Module
Rack to rack
Data centers Switches and Routers
Metro networks
Switches and Routers
40G BASE-ER4 Ethernet Links



1. On time delivery
3. Customization
4. Large product inventory with massive production line
5. Product distribution involves multi-fields, dozens of countries including some developed countries.
Yes, we welcome sample order for you to test and check the quality. Mixed samples are acceptable as well.
2. How to Store the Optical Fiber Cable Properly?
Store the drum indoor before using, the drum should place sideways not on the end.
3. What's your payment terms?
We accept T/T,L/C,Western Union,D/P etc. 30% in advance and 70% before shipment.
4. Are you factory direct?
As a professional Cable manufacturer, specialized in Fiber Optic Patch Cord, Fiber Optic PLC Splitter. Our products are mainly exported to Europe, South America, and some other countries and areas.
5. Is there any discount on the product?
We have several production promotion activities every month, welcome to inquire.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.