Alcatel-Lucent QSFP-40G-SR Compatible 40G QSFP+ SR4 Transceiver | 40GBASE‑SR4 QSFP+ 850nm 150m MPO MMF Bulk Wholesale | HYTOPTODEVICE

Usage Guidelines & Best Practices

• Fiber Choice: Only works with OM3 / OM4 multi‑mode MPO‑12 trunk cable; single‑mode fiber cannot support 850nm SR4 transmission and will lead to link failure.

• Distance Limit: Max 100m on OM3 MMF, max 150m on OM4 MMF; excessive splices, dirty end‑faces or sharp bends reduce actual working distance.

• Cleanliness & Dust: Keep dust caps on whenever unattached. Clean fiber end-faces with a optical cleaning pen before insertion; dust causes over 80% of optical link failures.

• Installation Specification: Hot‑plug supported; keep MPO connector end‑faces clean, observe minimum fiber‑bend radius requirements.

• Port Configuration: Confirm host ports are set to 40G SR4 mode; do not mix SR4 with other 40G optical standards on the same link.

Full Compatibility List and Supported Devices 

1. Supported Hardware & Firmware

2. Multi-Brand Cross Compatibility

3. Free Value-Added Services

Primary Application Scenarios

• Intra‑data‑center short‑haul leaf‑spine fabric links built on Alcatel‑Lucent OmniSwitch hardware
• 40G aggregation‑layer trunk expansion for large enterprise campus networks
• Top‑of‑Rack switch 40G uplinks towards compute and virtualisation server farms
• Rack‑to‑rack short‑range multi‑mode fiber connections within server halls
• Enterprise and service‑provider infrastructure refresh and network modernisation initiatives
• Multi‑vendor hybrid‑fabric deployments for cloud and virtualised workload environments

1.40GbE Switch-to-Switch Connectivity


2.40GbE Structured Cabling Interconnect


3.40GbE Switch-to-NIC Interconnection


4.Leaf-Spine Architecture

The Core Feature

1. Low Power, High- Density 40G Connectivity for Data Center

 Engineered for low power, high density, and high speed, the QSFP+ transceiver lets you fast-track your data center to 40G transmission — with less power draw, more ports per rack, and no downtime in performance.

2.Host-Device Tested for Proven Interoperability

Every transceiver is rigorously tested for compatibility in the target switch environment, so you can deploy with confidence — no surprises, no downtime. Not sure it fits? Compatibility Video available upon request.

3. 100% Individually Tested for Peak Performance

Every single unit is tested individually — no sampling, no shortcuts — to ensure optical compliance and continuous operational stability. Curious how we do it? Take a virtual tour of our Test Center.

FAQ 

Q1: Will this QSFP+ 40G SR4 work in my switch (Cisco, Arista, Juniper, Huawei, Alcatel‑Lucent)? A1: Compatible HYTOPTODEVICE 40G QSFP+ SR4 modules are programmed with the correct EEPROM data for major OEM brands. Before ordering, provide your exact switch model and firmware version so we can confirm interoperability.

Q2: Can I use a 40G SR4 module in a QSFP28 (100G) port? A2: Often yes, if the QSFP28 port can be configured down to 40G speed. Support varies by hardware platform, so verify the port's speed capability with your switch vendor before purchasing this HYTOPTODEVICE 40G SR4 transceiver.

Q3: Does it require a firmware upgrade on my Alcatel‑Lucent OmniSwitch? A3: Many OmniSwitch switches recognize standards‑compliant HYTOPTODEVICE 40G SR4 modules without upgrades. Some OEM platforms need a minor firmware update or feature license to accept non‑OEM optics — check your switch release notes.

Q4: Is it compatible with link partners like DAC or AOC on the other end of fiber link? A4: No. An optical 40G SR4 module must connect to another optical SR4 module (or a supported media converter); it cannot link directly to a DAC or AOC, which have completely different physical interfaces.

Q5: What is the maximum transmission distance of this Alcatel‑lucent QSFP‑40G‑SR compatible optic? A5: Per IEEE 802.3ba, HYTOPTODEVICE 40GBASE‑SR4 reaches 100 m on OM3 fiber and 150 m on OM4 multimode fiber. Longer runs require LR4/ER4 single‑mode modules.

Q6: What wavelength does this bulk wholesale 40G QSFP+ SR4 transceiver use? A6: It uses 850 nm (VCSEL), operating as 4 independent 10G lanes in parallel for a total of 40 Gbps, this is the standard optical specification for our HYTOPTODEVICE QSFP‑40G‑SR replacement module.

Q7: What is the operating temperature range for this compatible 40G SR4 optical module? A7: Commercial grade HYTOPTODEVICE modules run 0 °C to 70 °C. Industrial‑grade versions operate from −40 °C to +85 °C for outdoor or harsh environments — specify which variant you need at inquiry.

Q8: Does this 40G QSFP+ SR4 support breakout to four 10G links for re‑using existing 10G hardware? A8: Yes. With an MPO‑to‑4×LC fan‑out cable, one 40G SR4 port can feed four 10G SFP+ ports — a common cost‑saving way to reuse 10G equipment with HYTOPTODEVICE transceivers.

Q9: Does this Alcatel‑Lucent compatible module include TX/RX power monitoring function? A9: Yes, DDM/DOM is standard on HYTOPTODEVICE 40G QSFP+ SR4. You can read real‑time optical power per lane from the switch CLI to verify end‑to‑end link health during deployment and troubleshooting.

Q10: What connector does this QSFP‑40G‑SR substitute module use? A10: A 12‑fiber MPO/MTP connector (8 fibers active — 4 TX + 4 RX). Your patch cables, trunk cables, and panel adapters must match this physical interface for successful link bring‑up.

Q11: What about MPO polarity (Type A / B / C) when deploying this 40G SR4 optic? A11: MPO polarity is a very common source of "link‑down" faults. The correct MPO type depends on your cabling design and keying; confirm Type A/B/C with your cabling engineer before ordering matching cables for HYTOPTODEVICE modules.

Q12: Is a DAC or AOC cheaper — why should I select optical SR4 module for my data‑center project? A12: DACs are cheaper but limited to ~3–7 m and are not field‑serviceable; AOCs are fixed‑length. HYTOPTODEVICE SR4 optics offer longer reach (up to 150 m), flexible cable routing, and easy field‑replacement for data‑center builds.

Q13: Is this an original OEM module or a compatible one? What is the key procurement difference? A13: OEM modules carry the switch vendor's brand, higher price, and direct OEM support. HYTOPTODEVICE compatible modules are functionally equivalent, built to the same MSA standards, and usually cost 60–80% less — backed by our own warranty and technical support.

Q14: What testing is performed on each HYTOPTODEVICE 40G QSFP+ SR4 before shipping bulk orders? A14: Every module is 100% optically tested (TX power, RX sensitivity, BER) and compatibility‑validated on major switch brands, with detailed test reports available on request for large‑volume procurement projects.

Q15: What is the MOQ? Can I order sample units for pre‑deployment verification? A15: HYTOPTODEVICE supports sample orders (often 1–10 pcs) before committing to bulk MOQs. Reach out to us to get sample pricing and production lead‑time for your Alcatel‑Lucent network upgrade project.

Packaging & Custom OEM Solutions

Each QSFP+ SR4 module is individually sealed in ESD-safe anti-static packaging and stocked for same-day dispatch. Bulk orders can also be customized with OEM packaging—logo printing and private labeling included—built for network distributors, system integrators, and enterprise deployments.


Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.

• 100% MSA-compliant modules with Cisco, Huawei,Dell,Juniper, and Arista compatibility
• ISO 9001:2015 certified manufacturing facility in Shenzhen
• Average lead time of 3–5 business days with DHL/FedEx express options
• Dedicated pre-sales engineering support for custom configurations
• Actual hardware,actual switches,actual results.we publish compatibility test video,eliminate compatibility anxiety. you can watch before you buy. 
• We can provide inspection and shipping videos to make you feel as if you are right here with the product.

“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP+ modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia

Quality Certification & Compliance

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

• ISO 9001: Certified quality management and production consistency.

• CE & FCC: Fully compliant for seamless Global Market Access.

• RoHS: Committed to environmental responsibility and hazardous material control.

• Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.

Rigorous Industrial Product Testing

   

100% 3rd Party Compatible

Partial Test Demonstration