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QDD-2X100-CWDM4-S
QSFP-DD Transceiver, 2X 100G CWDM4, 2X Duplex CS, 2km SMF
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QDD-2X100-CWDM4-S is a high-performance optical transceiver built on the QSFP28 form factor, engineered for 100G data rate applications. It employs LC connectors and CWDM4 technology with four specific wavelengths (1271/1291/1311/1331 nm) to deliver robust, short-range transmission over single-mode fiber, making it well-suited for data center interconnects, enterprise networks, and telecom infrastructures.
Designed with compact physical dimensions that facilitate dense port environments, QDD-2X100-CWDM4-S supports protocols such as Ethernet and Fibre Channel while operating within a temperature range of 0 to 70°C. Its compatibility with major networking vendors like Cisco, Juniper, Huawei, and Arista further underlines its versatility in modern network deployments.
QDD-2X100-CWDM4-S price is $3,172.00, a 47.3% saving from the Cisco list price of $6,014.00. QDD-2X100-CWDM4-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QDD-2X100-CWDM4-S for additional pricing. Browse the full Cisco 400G Optical Modules series or explore all Cisco products.
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| QDD-2X100-CWDM4-S |  QDD-2X100-SR4-S |  QDD-400G-LR8-S |  QDD-400-CU2M |  QDD-400G-DR4-S | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP28 | QSFP28 | QSFP-DD | QSFP-DD | QSFP-DD |
| Data Rate | 100G | 2x100G | 400G | 400G | 400G |
| Connector Type | LC | LC | LC | Twinaxial | LC |
| Wavelength | 1271/1291/1311/1331 nm | 850 nm | 1310 nm | N/A | N/A |
| Transmission Distance | Short-Range | Short-Range | Long-Range | Short-Range | Short-Range |
| Fiber Type | Single-mode | Multi-mode | Single-mode | N/A | Multi-mode |
| Max Distance | 2000 meters | 100 meters (OM4) | 10 km | 2 meters | 500 meters |
| Supported Protocols | Ethernet / Fibre Channel | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel |
| Network Interface | Fiber | Fiber | Ethernet | Ethernet | Ethernet |
| Power Consumption | 6 W | 6.5W | 20 W | N/A | N/A |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | N/A | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista |
| Product Name | QDD-2X100-CWDM4-S | QDD-2X100-SR4-S | QDD-400G-LR8-S | QDD-400-CU2M | QDD-400G-DR4-S |
| Height | 0.67 inches | N/A | 0.80 inches | N/A | 0.44 inches |
| Width | 0.98 inches | N/A | 0.66 inches | N/A | 0.85 inches |
| Depth | 1.78 inches | N/A | 1.68 inches | N/A | 2.20 inches |
| Weight | 0.34 lbs | N/A | 0.25 lbs | N/A | 0.12 lbs |
Deployed this 2x100G CWDM4 QSFP-DD for metro links. Stable throughput and consistent 2km reach over SMF. Excellent reliability for data center interconnect projects.
Impressed with clean signal integrity and low error rates. Perfect fit for high-density 100G breakout requirements in our core aggregation layer.
Installation was straightforward and performance has been rock solid. Handles dual 100G traffic efficiently without packet loss.
Reliable 2km connectivity with predictable latency. Ideal for enterprise backbone upgrades requiring compact 400G form factor flexibility.
Consistent optical power levels and smooth interoperability with our switching platform. Highly dependable for production workloads.
Great solution for dual 100G deployments. Delivered stable performance during stress testing and ongoing operations.
Solid build quality and dependable link stability. A cost effective option for extending 100G services over single mode fiber.
The QDD-2X100-CWDM4-S is a QSFP-DD 2×100G CWDM4 optical transceiver supporting 2 km reach over single-mode fiber with dual duplex CS connectors.
This transceiver supports two independent 100 Gbps channels, delivering a total of 200 Gbps aggregate bandwidth.
It requires single-mode fiber (SMF) compliant with ITU-T G.652 standards for CWDM applications.
The module supports up to 2 km link length over single-mode fiber without dispersion compensation.
It uses dual duplex CS connectors for compact, high-density fiber connections.
Yes, the module is hot-pluggable for seamless insertions and removals without system downtime.
It uses four coarse-WDM wavelengths (1271 nm, 1291 nm, 1311 nm, and 1331 nm) per 100 Gbps channel.
Yes, it offers real-time digital diagnostics for optical power, temperature, voltage, and bias current.
It operates from 0 °C to 70 °C (commercial) and optionally –40 °C to 85 °C (industrial) for harsh environments.
Yes, it fully complies with QSFP-DD Multi-Source Agreement (MSA) specifications for broad interoperability.
Typical power consumption is under 10 W, ensuring efficient thermal management in high-density racks.
Ideal for data center interconnects, carrier networks, and metro edge aggregation requiring up to 2 km links.
Align the QSFP-DD module with the cage, insert until it clicks, then connect the CS duplex fibers securely.
It meets IEEE 802.3cu CWDM4, CPRI, ROADM, and Telcordia GR-468-CORE reliability standards.
Verify fiber polarity, clean CS connectors, check DOM readings for power levels, and confirm host compatibility.
Standard one-year warranty with options for extended coverage and advanced replacement services.