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100GBASE QSFP28 DWDM PAM4 Optical Module Transceivers for 80km & 120km
What Makes YRTFIBER 100G DWDM QSFP28 the Right Choice?
YRTFIBER 100G DWDM QSFP28 PAM4 transceivers convert a 100G electrical signal into a single-wavelength DWDM optical signal for high-capacity links over existing wavelength-division multiplexing infrastructure. Designed for passive DWDM applications, the modules support transmission up to 80km and are available with duplex LC or compact duplex CS optical connectors.
When integrated into a correctly engineered link with compatible DWDM multiplexers, optical amplifiers and dispersion compensation, the solution can support distances up to 120km. Custom wavelength planning, equipment-compatible firmware coding and OEM labeling are available for data-center interconnect, metro, telecom and service-provider networks.
100GBASE QSFP28 DWDM Specification parameters
- Specification parameters
- OPTICAL CHARACTERISTICS
| Part Number | Data Rate | Wavelength | TX | Sensitivity | Distance | Connector | Temperature | Datasheet |
| AE-QSFP28-D80-XX | 100G | DWDM | -1~4dBm | -12.5dBm | 80KM | Duplex LC | 0~70°C |  |
| AE-QSFP28-D80-XXXX | 100G | DWDM | -1~4dBm | -12.5dBm | 80KM | Duplex LC | 0~70°C | |
Product Structure & Composition
The compact QSFP28 housing integrates four 25G-class electrical lanes, PAM4 signal processing, a wavelength-stabilized DWDM optical transmitter, optical receiver, digital diagnostic monitoring circuitry and a high-speed host connector. The module converts the parallel electrical input into one 100G PAM4 optical wavelength for transmission through a DWDM network.
Benefits of 100GBASE QSFP28 DWDM
Add More 100G Links to Existing Fiber
Each transceiver carries a 100G PAM4 signal on a dedicated DWDM wavelength.
Multiple wavelengths can share the same fiber pair through a compatible DWDM multiplexer, increasing total capacity without installing a separate fiber pair for every 100G service.
Reduce Long-Haul Network Complexity
The QSFP28 module produces a single-wavelength 100G optical signal that can connect directly to supported passive DWDM infrastructure.
This compact approach can reduce the need for separate transponders in compatible network designs and simplify rack space, cabling and power planning.
Support Metro and Extended-Reach Connections
The transceiver supports links up to 80km when the optical budget and dispersion limits are satisfied.
With correctly selected EDFA amplification and DCM equipment, an engineered DWDM system can extend the total link distance up to 120km.
Choose LC or Space-Saving CS Connectivity
Duplex LC fits widely deployed optical patching systems, while duplex CS provides a smaller connector footprint for compatible high-density panels.
The two interface options help network designers match the module to existing cabling or future density requirements.
Simplify Multi-Vendor Deployment
Custom firmware coding can be prepared for specified switches, routers and transport platforms.
Correct coding helps the host equipment recognize the module and reduces compatibility problems during installation and replacement.
Engineering Applications 100GBASE QSFP28 DWDM
Data Center Interconnect
Transport multiple 100G connections between data-center sites over a shared DWDM fiber pair.
The QSFP28 form factor helps reduce equipment footprint in compatible switches and routers.
Metro and Regional Networks
Deploy wavelength-based 100G links between aggregation sites, central offices and metropolitan network nodes.
Choose the appropriate channel, amplification plan and dispersion strategy according to the route.
Telecom and ISP Backbone Expansion
Add 100G services to suitable DWDM infrastructure without dedicating a separate fiber pair to each connection.
Multiple wavelengths enable scalable capacity growth as traffic demand increases.
Extended-Reach Point-to-Point Links
Build links up to 80km within the supported module budget or extend a properly engineered system up to 120km with compatible EDFA and DCM equipment.
Perform a complete optical-power and dispersion calculation before installation.
Shipping & Packaging
Packaging and Shipping
Each 100G DWDM QSFP28 transceiver is protected by anti-static packaging and labeled with its model, wavelength channel, connector, reach and compatibility information. Protective inner packing and reinforced export cartons help prevent electrostatic, impact and moisture damage during storage and international transportation.
Individual anti-static protective packaging
DWDM channel, wavelength, connector and compatibility identification
Protective inner tray or box and reinforced export carton
OEM label, serial number, barcode and packaging customization
Express, air-freight and sea-freight delivery support
Product Comparison：
100G DWDM QSFP28 LC vs CS and 80km vs 120km Solutions
| Comparison | 80km Duplex LC | 80km Duplex CS | Engineered System up to 120km |
|---|---|---|---|
| Typical Module | AE-QSFP28-D80-XX | AE-QSFP28-D80-XXXX | Compatible 100G DWDM QSFP28 PAM4 |
| Data Rate | 100Gbps | 100Gbps | 100Gbps per wavelength |
| Optical Signal | Single-wavelength DWDM PAM4 | Single-wavelength DWDM PAM4 | Single-wavelength DWDM PAM4 |
| Connector | Duplex LC | Duplex CS | LC or CS according to the selected module |
| Nominal Reach | Up to 80km | Up to 80km | Up to 120km for a complete engineered link |
| External EDFA | Depends on link budget | Depends on link budget | Required as determined by link design |
| External DCM | Depends on accumulated dispersion | Depends on accumulated dispersion | Required as determined by link design |
| Best For | Standard-density LC infrastructure | High-density CS patching | Extended metro and regional connections |
100GBASE QSFP28 DWDM Selection Guide
How to Select a 100G DWDM QSFP28 Transceiver
Confirm the host interface: Verify that the switch, router or transport platform supports 100G QSFP28 PAM4 DWDM operation.
Choose the DWDM channel: Assign a matching wavelength for each end of the point-to-point link and coordinate all channels with the DWDM multiplexer plan.
Select the connector: Choose duplex LC for common optical patching systems or duplex CS for compatible high-density infrastructure.
Measure the route: Confirm the fiber length, fiber attenuation, connector loss, splice loss and passive DWDM insertion loss.
Calculate the optical budget: Compare total link loss with transmitter power, receiver sensitivity and receiver overload limits while retaining an engineering margin.
Check chromatic dispersion: Calculate accumulated dispersion at the selected wavelength and add a suitable DCM when the route exceeds the supported dispersion tolerance.
Plan optical amplification: For extended links, position compatible EDFA equipment according to the link design and verify that amplifier noise and output power remain acceptable.
Confirm equipment compatibility: Provide the host manufacturer, exact model and software version for the correct firmware coding.
Check the environment: The referenced modules are specified for commercial operation from 0 to 70°C.
How to Install a 100G DWDM QSFP28 Transceiver
Wear an anti-static wrist strap and verify the host compatibility, DWDM wavelength, connector type and link design before installation. Confirm that the transceivers at both ends use the same assigned channel, then keep the module latch closed, align the QSFP28 module with the port and gently push it into place until fully seated. Do not touch the optical interface or force the module into the host port.
Clean and inspect the duplex LC or CS connectors before connecting the transmit and receive fibers through the correct DWDM multiplexer ports. Install any specified EDFA, DCM and optical attenuator according to the approved link plan. After power-up, verify host recognition, wavelength routing, transmit and receive optical power, FEC status, link stability and error counters. Keep dust caps installed whenever a module or fiber connector is disconnected.
Download YRTFIBER Product Catalog
Factory Real Shot
Frequently Asked Questions & Quick Inquiry
100GBASE QSFP28 DWDM FAQ
What is a 100G DWDM QSFP28 PAM4 transceiver?
It is a hot-pluggable optical module that converts a 100G electrical interface into a single-wavelength PAM4 optical signal for transmission through a compatible DWDM network.
What is the maximum transmission distance?
The referenced transceiver models support links up to 80km when the optical budget and dispersion conditions are satisfied. A complete system can reach up to 120km when correctly engineered with compatible EDFA and DCM equipment.
Does the transceiver alone provide a 120km link?
No. The 120km figure applies to a complete engineered optical system. It normally requires suitable amplification, dispersion compensation, passive DWDM components and a verified end-to-end link budget.
What is the difference between the LC and CS versions?
Both versions carry the same type of 100G DWDM PAM4 signal. Duplex LC is widely used in existing fiber systems, while duplex CS offers a smaller connector footprint for compatible high-density patching equipment.
Can multiple 100G links share one fiber pair?
Yes. Each link uses an assigned DWDM wavelength, and compatible DWDM multiplexers combine multiple wavelengths onto the same fiber pair. The channel plan and optical budget must be checked for the complete system.
Are EDFA and DCM always required?
No. Their use depends on fiber length, total insertion loss, accumulated chromatic dispersion and the required system margin. An optical-link calculation must determine whether amplification or dispersion compensation is needed.
Can the module be coded for my switch or router?
Yes. Custom compatibility coding is available. Provide the equipment manufacturer, exact model and software or firmware version before ordering.
Can a long-reach DWDM module be used on a short link?
Only after checking the receiver overload limit and total link loss. An optical attenuator may be required when the received power is too high.
Why does the 100G DWDM link remain down after installation?
Check host compatibility, port configuration, FEC requirements, wavelength assignment, MUX/DEMUX channel routing, LC or CS transmit/receive direction, connector cleanliness, optical power, EDFA direction and DCM placement.
What information is required for a quotation?
Please provide the quantity, host equipment brand and model, DWDM channel or wavelength, connector type, fiber distance, passive component losses, EDFA and DCM requirements, operating temperature, OEM labeling needs and delivery destination.
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