40G QSFP+ LR4 4CWDM 10km
Vitex VQ-40LR4CS-AA are designed for use in 40G connections over single mode fiber. They integrate four channel CWDM DFB lasers and multiplex them into a single channel for 40Gbps optical transmission. The module can operate at 40 Gbps up to 10km using 9/125um SMF. They are compliant with the QSFP+ MSA and IEEE 802.3ba 40GBASE-LR4 standards.
Request a quote
- Features
- Specifications
- Applications
- FAQs
- Datasheet
- Compliant with IEEE Std 802.3ba,40G Ethernet LR4
- Compliant with QSFP+MSA Management interface specifications per
- SFF-8436 4 CWDM Lane Mux/Demux design 4 channels CWDM DFB 4 channels PIN photo detector
- Up to 11.1Gb/s per channel data links Single +3.3V power supply Class 1 laser safety certified
- Commercial operating temperature: 0°C to 70°C
- Up to 10km on SMF
- RoHS Compliant
| Form Factor | QSFP+ |
|---|---|
| Data Rate | 40G |
| Wavelength | CWDM |
| Distance | 10km |
| Connector | LC Duplex |
| Protocol | Ethernet |
| Temperature | Commercial (0–70°C) |
Q: What is the 40G QSFP+ LR4 4CWDM 10km?
A: It is a 40G optical transceiver in the QSFP+ form factor, supporting Ethernet with a reach of 10km over fiber optic cable.
Q: What is the maximum transmission distance?
A: This transceiver supports up to 10km over fiber optic cable at CWDM.
Q: What connector type does this use?
A: It uses a LC Duplex connector with fiber optic cable.
Q: What applications is this designed for?
A: It is designed for Enterprise Networking, Storage Area Networks (SAN).
Q: Is this module compatible with my switch or router?
A: This transceiver is QSFP+ MSA compliant, meaning it is designed to work with any platform that supports the QSFP+ standard. Contact Vitex engineering to confirm compatibility with your specific hardware.
Technical Documentation
Access comprehensive technical specifications, mechanical diagrams, and validation reports.
Download Datasheet PDF
Built For Real Deployment Environments
Every Vitex optical product undergoes optical testing, interoperability validation, and system-level verification to ensure performance, reliability, and long-term availability in production networks.
High-Speed Fiber Integration
Ecosystem Compatibility Testing
Advanced Optical Test Bench
Rack-Level Optics Validation
Fiber Connectivity Testing
vitex-system-validation-lab
Fiber Optics Categories
Get engineering answers before you commit
Share your BOM, validate compatibility, or sanity-check 400G/800G designs. Get fast, practical guidance from US-based fiber optics engineers.

