40G QSFP+ LR4 4CWDM 10km

Vitex Part #: VQ-40LR4CS-AA

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.

Features
Specifications
Applications
FAQs
Datasheet

Compliant with IEEE Std 802.3baï¼Œ40G 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 oC to 70 oC 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)

Enterprise Networking Storage Area Networks (SAN)

Q: Is this 40G LR4 compatible with standard Single Mode Fiber? A: Yes, it is designed for G.652 Single Mode Fiber (SMF) for distances up to 10km.

Q: Does it use a CWDM or LAN-WDM grid? A: This module uses a CWDM multiplexer (1271, 1291, 1311, 1331nm) to combine 4x10G signals.

Q: What connector type does it have? A: Standard Duplex LC.

Q: Is it interoperable with 40GBASE-LR4 from other vendors? A: Yes, it complies with the IEEE 802.3ba standard for 40GBASE-LR4.

Technical Documentation

Access comprehensive technical specifications, mechanical diagrams, and validation reports.

Download Datasheet PDF

Trusted by engineers in HPC, networking, and Pro-AV

Our Clients

Testimonials - What Our Customers Say

I have never experienced a quality problem with anything from Vitex customer service. Inquiries are answered promptly and accurately. I can rely on what Vitex tells me.

Tom A.

Director, PLM at a tier 1 communication network company

Transceivers worked as expected. Very good value.

Stephen W.

I had a good experience with customer service. Their engineer helped me out with some technical questions and recommended the right product. Highly recommend your company to all my co-workers.

Mathieu G.

Canada

Great Customer Service. Good on time delivery.

Kimberly D.

Buyer at a large defense contractor

As a developer of medical systems, we are required to comply with EMC standards for medical devices. Vitex devices met this requirement every time we tested them. The other devices we tested did not even come close.

Jon

Engineering Manager at a leading medical systems company

You're the best, thanks a bunch to Vitex!

Jeni D.

Buyer at a leading video surveillance solutions provider

Thank you all so much for all you have done for our company with its very needed products. No returns, none of your competition can beat that record!!

Gail E.

Buyer at a leading video security company

I am using the transceivers in our network. Impressed with their BER performance.

Eli L., CA

Thank you for your quick response and friendly service.

Wayne M.

Partner at a leading Pro AV design company

Tested & Validated

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.

Request a Quote