CWDM4 four-wavelength DFB design for duplex single-mode links
Product images are illustrative renders for marketing reference; final delivered product is built to order per confirmed specifications.
100G QSFP28 CWDM4 2km 1310nm SMF Duplex LC DDM Optical
100G QSFP28 CWDM4 2km 1310nm SMF Duplex LC DDM Optical Transceiver Module
This 100G QSFP28 CWDM4 transceiver runs four 25G NRZ channels over CWDM DFB lasers around 1310nm across dual-fiber single-mode links up to 2km, with a duplex LC interface, COB packaging, low power (≤3.5W) and DDM. Built to 100GBASE-CWDM4 MSA, it is a high-speed, cost-effective DCI and FTTX module.
- 100Gb/s (4×25G NRZ) in a compact QSFP28 form factor
- 100GBASE-CWDM4 single-mode 2km reach
- Low power consumption ≤3.5W
- Duplex LC interface with real-time DDM monitoring
- Data rate
- 100 Gb/s (4 × 25G NRZ)
- Wavelength
- 1310 nm CWDM4 (4x CWDM DFB DML)
- Reach
- 2 km
- Interface
- Duplex LC
- Fibre / media
- Single-Mode Fiber (SMF)
- Diagnostics
- Yes
- Coded and confirmed for your host platform before production
- Samples for evaluation in the intended port
- Specification, test data and compliance paperwork with the order
Overview
What this module is for.
This 100G QSFP28 CWDM4 transceiver runs four 25G NRZ channels over CWDM DFB lasers around 1310nm across dual-fiber single-mode links up to 2km, with a duplex LC interface, COB packaging, low power (≤3.5W) and DDM. Built to 100GBASE-CWDM4 MSA, it is a high-speed, cost-effective DCI and FTTX module.
Review the exact module, host platform and complete link requirement before ordering. Our inquiry keeps the configuration, host details and quantity together in one record.
Check the optical budget for your pathKey selling points
- 100Gb/s (4×25G NRZ) in a compact QSFP28 form factor
- 100GBASE-CWDM4 single-mode 2km reach
- Low power consumption ≤3.5W
- Duplex LC interface with real-time DDM monitoring
- QSFP28 MSA-compliant, hot-pluggable, plug-and-play
Technical detail
Listed specifications.
Fields published for initial selection. The production datasheet, coding and marking are confirmed with the quotation.
| Parameter | Listed value |
|---|---|
| Type | Fiber Optic Transceiver (QSFP28) |
| Standard | 100GBASE-CWDM4 |
| Data Rate | 100 Gb/s (4 × 25G NRZ) |
| Form Factor | QSFP28 |
| Wavelength | 1310 nm CWDM4 (4x CWDM DFB DML) |
| Transmission Distance | 2 km |
| Connector | Duplex LC |
| Fiber Type | Single-Mode Fiber (SMF) |
| Power Consumption | ≤ 3.5 W |
| Packaging | COB |
| DDM / DOM | Yes |
Technical drawings
Dimensions, structure and interfaces.
Supplier drawings for this product family. Click any drawing to enlarge it — the callouts are readable at full size.
Drawings are illustrative. Confirm mechanical dimensions and interface details against the production datasheet before design-in.
Build quality
Details that decide reliability.
Low-power COB packaging for dense deployments
Gold-plated edge connector for stable signaling
Pull-tab release for high-density QSFP28 port access
Where it is used
Typical applications.
- High-speed data center interconnect (2km)
- FTTX / FTTH / FTTP aggregation
- Campus and metro 100G backbone
- IP core and transport networks
Application notes describe common deployments for this product type. Confirm the design of your own link with the responsible engineering team.
Application concepts
OEM / ODM
Customization options.
- Commercial (0~70°C) and Industrial (-40~85°C) temperature grades
- OEM/ODM coding for major switch platforms
- 2km / 10km reach selection
- Neutral / custom export packaging
Availability, minimum quantity and lead time for customized configurations are confirmed in the quotation.
Discuss a custom configuration
Ordering
What is confirmed, and what we need from you.
Listed ordering information
- MOQ
- 1 piece
- Single package size
- 25 × 20 × 10 cm; gross weight ~2.0 kg
- Warranty
- 12 months
- Lead time
- samples in stock; bulk built to order
Include this in your inquiry
- Product reference and required quantity
- Host brand, model, port and software version
- Fibre or cable type, connector and installed reach
- Operating environment and temperature grade
- Destination, sample needs and requested schedule
MOQ, lead time, warranty and applicable documents are confirmed in the quotation.
FAQ
Questions about this model.
What link distance is listed for the 100G QSFP28 CWDM4 2km 1310nm SMF Duplex LC DDM Optical?
The listed reach is 2 km. Actual distance depends on the installed fibre loss, the number of connectors and splices and the receiver sensitivity at both ends, so confirm the optical budget for your own path before ordering. Our link budget calculator works through the arithmetic in a minute.
Which wavelength does this module use?
It is listed at 1310 nm CWDM4 (4x CWDM DFB DML). Both ends of a duplex link must use the same wavelength plan.
What connector and fibre does it need?
The listed interface is Duplex LC on Single-Mode Fiber (SMF). Check that your patch cords, panel adapters and polarity match before installation.
Does it support DDM / DOM diagnostics?
Listed as: Yes. Digital diagnostics report optical transmit power, receive power, bias current, supply voltage and module temperature through the host, which makes commissioning and fault isolation far faster than swapping parts.
How much power does the module draw?
Listed power consumption is ≤ 3.5 W. Confirm the per-port power budget of the host when a full chassis is populated, particularly for copper RJ45 modules and long-reach optics.
Can it be coded for my switch?
Yes. Send the host manufacturer, the exact model and the software version with your inquiry. Coding is confirmed per platform before production — a connector that fits does not by itself prove the host will accept the module.
Can I evaluate a sample first?
Include the required quantity, host platform and destination in your inquiry. Sample availability, charges and lead time are confirmed in the quotation, and we recommend testing in the intended port before a bulk order.
More in the procurement FAQ.
Related
Other models in this family.
100G BiDi QSFP28 LR1/ER1 10-40km LC Single-Fiber Optical
- Data Rate100 Gb/s
- WavelengthLWDM (single fiber BiDi)
- Transmission Distance10 / 20 / 30 / 40 km (LR1 / ER1)
100G BiDi QSFP28 Single-Fiber Transceiver 1270/1330nm LC
- Data Rate100 Gb/s
- Wavelength1270nm / 1330nm (single fiber BiDi)
- Transmission Distance10 – 80 km (LR1 / ER1 / ZR1)
100G BiDi QSFP28-100G-BX20U/D 20km LC Long-Reach
- Data Rate100 Gb/s
- WavelengthLWDM (single fiber BiDi)
- Transmission Distance20 km
High-Speed Optical Transceiver Module — 25G SFP28 / 40G
- Data Rate25 / 40 / 100 Gb/s
- Wavelength850 / 1310 / 1270-1330 nm (per variant)
- Transmission Distance100 m – 80 km (per variant)
Next step
Confirm this configuration with us.
Send the host platform, the installed link and the quantity. We will confirm coding, reach and lead time in the quotation.