25GBASE DWDM SFP28

 

Item Spotlights

● Max. Power Consumption 2W

● Tested in Targeted Switch for Superior Performance, Quality, and Reliability

● High-speed Connectivity Compliant to IEEE 802.3cc

● 25G NRZ retimed 25GAUI electrical interface

● Hot Pluggable SFP28 MSA Compliant

● Digital Optical Monitoring Capability for Strong Diagnostic Capabilities

● Class 1 FDA Laser Safety and RoHS Compliant

● Cooled EML DFB-based C-band DWDM transmitter

● Maximum link length of 15km on Single Mode Fiber (SMF)

 

Description

Compatible	25GBASE DWDM SFP28	Vendor Name	FB-LINK
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	C17-C61	Max Cable Distance	10km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML DWDM	Receiver Type	PIN
TX Power	-2~6dBm	Receiver Sensitivity	＜-12dBm
CDR	TX and RX	Powerbudget	10dB
Power Consumption	2W	Extinction Ratio	4dB
DDM/DOM	Supported	Commercial Temperature Range	0 to 70°C (32 to 158°F)
Protocols	MSA Compliant, CPRI, eCPRI	Warranty	3 Years

 

The demand for faster, more reliable network infrastructure has never been greater. As enterprises scale their operations and data centers handle exponentially growing traffic, optical transceivers have become the backbone of modern telecommunications. Among these critical components, the 25Gb/s DWDM SFP28 module stands out as a game-changing solution for organizations requiring robust, high-performance connectivity over extended distances.

Understanding DWDM Technology in Modern Optical Transceivers

Dense Wavelength Division Multiplexing (DWDM) represents a significant leap forward in fiber optic communication. Unlike traditional transmission methods, DWDM technology enables multiple data streams to travel simultaneously over a single fiber strand by utilizing different wavelengths of light. This capability makes optical transceivers equipped with DWDM particularly valuable for maximizing bandwidth efficiency while minimizing infrastructure costs.

The 25Gb/s DWDM SFP28 module leverages this technology to deliver exceptional performance across metropolitan area networks, data center interconnects, and enterprise applications. By supporting C-band wavelengths ranging from C17 to C61, these optical transceivers provide network architects with unprecedented flexibility in designing scalable, future-proof infrastructures.

Key Advantages of 25GBASE DWDM SFP28 Modules

Superior Performance Metrics

Modern optical transceivers must meet stringent performance requirements to support mission-critical applications. The 25Gb/s DWDM SFP28 excels in this regard, offering transmission capabilities up to 15 kilometers on single-mode fiber with a robust 10dB power budget. This substantial margin ensures reliable operation even in challenging environmental conditions or with aging fiber infrastructure.

The inclusion of Clock and Data Recovery (CDR) functionality on both transmit and receive paths distinguishes these optical transceivers from basic modules. CDR technology regenerates degraded signals, maintaining signal integrity over long distances and through multiple network elements. This feature proves invaluable in real-world deployments where optical path quality may vary.

Energy Efficiency and Thermal Management

Power consumption remains a critical consideration in data center design. With maximum draw limited to just 2 watts, these optical transceivers contribute to significant energy savings when deployed at scale. The cooled EML DFB-based transmitter architecture ensures stable operation across the full commercial temperature range, from 0°C to 70°C, without compromising performance or reliability.

Comprehensive Diagnostic Capabilities

Digital Optical Monitoring (DOM) functionality embedded in modern optical transceivers provides real-time visibility into module health and performance. Network administrators can monitor critical parameters including temperature, voltage, bias current, transmitted optical power, and received optical power. This diagnostic capability enables proactive maintenance strategies, reducing downtime and optimizing network performance.

Applications and Use Cases

Data Center Interconnectivity

As cloud computing and distributed applications proliferate, data centers require high-capacity links between facilities. Optical transceivers with DWDM capabilities excel in these scenarios, allowing multiple 25Gb/s connections to share common fiber infrastructure. This approach dramatically reduces the cost per bit transmitted while maintaining the low latency essential for synchronous replication and distributed computing applications.

5G Fronthaul and Backhaul Networks

The rollout of 5G wireless networks demands unprecedented bandwidth between cell sites and core network elements. These optical transceivers support both CPRI and eCPRI protocols, making them ideal for 5G infrastructure deployment. The ability to transmit 25Gb/s over 10 kilometers or more enables flexible network topology designs while meeting strict latency requirements.

Enterprise Campus Networks

Large enterprise campuses with multiple buildings benefit significantly from DWDM-capable optical transceivers. A single fiber pair can support multiple wavelengths, each carrying 25Gb/s of throughput. This capability simplifies fiber management while providing ample headroom for future growth.

Integration and Compatibility Considerations

The hot-pluggable SFP28 form factor ensures seamless integration with existing network infrastructure. Compliance with SFP28 MSA specifications guarantees compatibility across multiple vendor platforms, reducing procurement complexity and inventory management challenges. When selecting optical transceivers, organizations should verify compatibility with their specific switch and router models to ensure optimal performance.

The modules' adherence to IEEE 802.3cc standards ensures interoperability with other compliant equipment, facilitating heterogeneous network environments. This standards compliance proves particularly valuable in multi-vendor deployments where equipment from different manufacturers must work together seamlessly.

Installation Best Practices

Proper installation significantly impacts the performance and longevity of optical transceivers. Always handle modules by their edges, avoiding contact with optical interfaces or electrical contacts. Before installation, inspect fiber connectors for contamination using appropriate inspection tools. Even microscopic particles can cause signal degradation or module damage.

When connecting fibers, ensure proper polarity-transmit ports must connect to receive ports on the opposite end. The duplex LC connector design used by these optical transceivers simplifies this process, but verification remains essential. After installation, use DOM functionality to verify that optical power levels fall within expected ranges.

Maintenance and Troubleshooting

Regular monitoring of optical transceivers through DOM interfaces provides early warning of potential issues. Gradually increasing temperature readings may indicate inadequate airflow or aging components. Declining optical power levels could signal fiber degradation or connector contamination.

When troubleshooting connectivity issues, systematically check fiber continuity, connector cleanliness, and module seating. The diagnostic capabilities built into these optical transceivers can pinpoint whether issues originate in the transmitter, receiver, or fiber path, accelerating problem resolution.

Future-Proofing Network Infrastructure

Investing in high-quality optical transceivers represents a strategic decision for organizations planning long-term network evolution. The 25Gb/s capacity provides substantial headroom beyond typical current requirements, accommodating traffic growth without immediate infrastructure upgrades. DWDM compatibility ensures that additional capacity can be added by deploying modules on different wavelengths rather than installing new fiber.

The three-year warranty covering these optical transceivers reflects manufacturer confidence in product reliability while protecting customer investments. This extended coverage period aligns with typical network equipment refresh cycles, providing peace of mind throughout the operational lifecycle.

Frequently Asked Questions

What is the difference between DWDM and CWDM optical transceivers?

DWDM (Dense Wavelength Division Multiplexing) optical transceivers use tightly spaced wavelengths in the C-band spectrum, allowing many more channels on a single fiber compared to CWDM (Coarse Wavelength Division Multiplexing). DWDM modules typically support longer distances and higher channel counts but operate at specific ITU-defined wavelengths, while CWDM uses wider channel spacing with shorter reach.

Can I use these modules with existing 10G infrastructure?

While these optical transceivers operate at 25Gb/s, they cannot directly connect to 10G equipment. However, they can coexist on the same fiber plant when using DWDM technology, with appropriate multiplexing equipment. Network upgrades should consider switch and router compatibility with 25G interfaces.

How does temperature affect optical transceiver performance?

Optical transceivers experience wavelength drift and power output variations with temperature changes. The cooled EML design in these modules maintains stable performance across the commercial temperature range. However, deployment in environments consistently near temperature extremes may reduce module lifespan. Adequate data center cooling remains essential for optimal reliability.

What maintenance do optical transceivers require?

Regular inspection and cleaning of fiber connectors represents the primary maintenance requirement. Contaminated connectors cause the majority of optical transceiver failures. Additionally, monitoring DOM parameters helps identify degrading modules before complete failure. These optical transceivers should be kept in protective caps when not installed to prevent dust accumulation.

Are these modules compatible with multi-mode fiber?

No, DWDM SFP28 optical transceivers require single-mode fiber. The 1310nm or 1550nm wavelengths used by these modules propagate differently than the 850nm typically used with multi-mode fiber. Attempting to use single-mode modules with multi-mode fiber will result in poor performance or no connectivity.

What is the significance of the 10dB power budget?

The power budget represents the maximum allowable loss between transmitter and receiver while maintaining reliable communication. A 10dB budget accommodates fiber loss, connector losses, and patch panel losses over the link distance. This margin ensures reliable operation even with some fiber degradation over time or less-than-perfect installations.

How do I verify optical transceiver compatibility with my switch?

Consult your switch manufacturer's compatibility matrix or hardware compatibility list. While these optical transceivers comply with industry standards, some vendors maintain approved device lists. Testing modules in your specific environment before large-scale deployment represents the most reliable verification method.

What does the RoHS compliance mean for deployment?

RoHS (Restriction of Hazardous Substances) compliance indicates these optical transceivers meet environmental standards by limiting lead, mercury, and other hazardous materials. This compliance ensures the modules meet regulatory requirements in most jurisdictions and supports corporate sustainability initiatives.

Hot Tags: