🚀 40G Upgrade Without Re-Cabling | Cisco QSFP-40G-SR-BD= BiDi Solution

Upgrade to 40G Using Existing LC Fiber — No MPO Required

The Cisco QSFP-40G-SR-BD= is an advanced 40GBASE-SR BiDi QSFP+ optical transceiver designed to deliver 40Gbps over duplex multimode fiber (LC).

Unlike traditional SR4 modules that require MPO cabling, this BiDi module operates over standard LC duplex fiber, supporting up to 100 meters (OM3) and 150 meters (OM4)—making it the ideal solution for cost-effective 10G to 40G upgrades.

Engineered by Cisco Systems, it ensures seamless integration and reliable performance in enterprise and data center environments.

🔥 Why This Module Converts Extremely Well

✔ Want to upgrade to 40G without replacing fiber? ✔ Avoid expensive MPO cabling deployment? ✔ Need a quick and low-risk upgrade solution?

👉 BiDi technology eliminates the biggest barrier to 40G adoption: cabling cost.

⚡ SR4 vs SR-BD (BiDi) —

Feature	QSFP-40G-SR4	QSFP-40G-SR-BD
Fiber Type	MPO (12-core)	LC Duplex (2-core)
Cabling Cost	High	Low
Upgrade Complexity	High	Very Low
Use Case	New deployments	Upgrade projects

👉 If your customer already has LC fiber → BiDi is the best choice.

🧠 Key Features of Cisco QSFP-40G-SR-BD=

Data Rate: 40 Gbps

Technology: Bi-directional (BiDi) transmission

Wavelength: 850nm / 900nm (dual wavelength)

Distance:

100 m (OM3)

150 m (OM4)

Connector: LC Duplex

Fiber Type: Multimode fiber (MMF)

Form Factor: QSFP+

Digital Optical Monitoring (DOM): Supported

Hot-swappable

Designed for Cisco platforms

🏗️ High-Conversion Use Cases

1. 10G → 40G Data Center Upgrade

Reuse existing LC fiber

Avoid infrastructure overhaul

2. Enterprise Network Modernization

Upgrade backbone links without downtime

Lower deployment cost

3. High-Density Data Centers

Simplified cabling vs MPO

Faster installation

4. Budget-Constrained Projects

Reduce total cost of ownership (TCO)

Maximize ROI

💰 Biggest Advantage: Cost Savings

👉 Traditional 40G upgrade requires:

MPO fiber

New patch panels

More installation work

👉 With QSFP-40G-SR-BD=:

Use existing LC fiber

No rewiring

Faster deployment

✅ Save up to 40–60% on cabling costs

🧩 Complete 40G BiDi Solution

✅ Optical Modules

Cisco QSFP-40G-SR-BD=

Cisco SFP-10G-SR (for backward compatibility)

✅ Cabling

Existing LC-LC multimode fiber (OM3/OM4)

✅ Equipment

40G switches

Mixed 10G/40G environments

👉 Perfect for phased upgrade strategies

📊 Technical Specifications

Parameter	Specification
Form Factor	QSFP+
Data Rate	40 Gbps
Standard	40GBASE-SR-BD
Wavelength	850 / 900 nm
Max Distance	100 m (OM3) / 150 m (OM4)
Connector	LC Duplex
Fiber Type	Multimode
Tx Power	-4 ~ 5 dBm
Rx Sensitivity	≤ -6 dBm
Power Supply	3.3V
Operating Temp	0°C to +70°C
DOM Support	Yes
Compliance	QSFP+ MSA, RoHS

❓ FAQ

Q1: What is the main advantage of SR-BD?

It allows 40G transmission over existing LC fiber, eliminating the need for MPO cabling.

Q2: Do I need new fiber infrastructure?

No, it works with existing duplex multimode fiber.

Q3: Is it compatible with 10G networks?

It is commonly used in mixed 10G/40G upgrade environments.

Q4: What is the maximum distance?

Up to 100m (OM3) and 150m (OM4).

📈 SEO Keywords

Cisco QSFP-40G-SR-BD, QSFP-40G-SR-BD=, Cisco 40G BiDi module, 40G LC transceiver, BiDi QSFP+ module, 40G upgrade without MPO, Cisco 40G optical module, data center 40G upgrade solution

🚀 Get a Quote — Upgrade to 40G Without Re-Cabling

👉 Planning a 40G upgrade project?

✔ No fiber replacement needed

✔ Faster deployment

✔ Lower total cost

Contact us now to check availability and pricing.

Cisco QSFP-40G-SR-BD= 40GBASE-SR BiDi QSFP+ Optical Transceiver