1.25G LX SFP

 

The SFP optical module operates at 1.25G speeds and represents an enhanced evolution of the GBIC interface. Featuring dimensions reduced to half the GBIC footprint, this compact form factor significantly improves equipment port capacity. Available SFP module variants at 1.25G include dual fiber configurations, single fiber designs, CWDM wavelength divisions, DWDM dense multiplexing solutions, among others.

These 1.25G transceivers integrate seamlessly with fiber switches, routing equipment, server platforms and additional optical networking hardware to create robust, high-performance fiber connections. They deliver dependable data transport and network infrastructure support, serving critical functions across diverse deployment scenarios.

 

 

 

● Hot-pluggable SFP form factor

● Supports 1.25Gb/s aggregate bit rate

● Power dissipation<1W

● Commercial case temperature range of -40°C to 85°C

● Single 3.3V power supply

● Maximum link length of 10km on Single Mode Fiber (SMF)

● Aligned with IEEE 802.3z

● 1.25G NRZ -based 1310nm transmitter

● 1.25G NRZ retimed electrical interface

● Duplex LC receptacles

● I2C management interface

● RoHS compliant

 

 

 

 

Compatible	SFP GE LX	Vendor Name	FB-LINK
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1310nm	Max Cable Distance	10km
Connector	Duplex LC	Media	SMF/MMF
Transmitter Type	FP	Receiver Type	PIN
TX Power	-9.5~-3dBm	Receiver Sensitivity	＜-23dBm
MTBF(LX)	2583979 Hours	Receiver Overload	-3dBm
Power Consumption	≤1W	Extinction Ratio	＞9dB
DDM/DOM	Supported	Commercial Temperature Range	0 to 70°C (32 to 158°F)
Protocols	IEEE 802.3ah-2004, IEEE 802.3z, SFF-8472, SFP MSA (INF-8074i) Compliant	Warranty	3 Years

 

Fiber optic networks continue to revolutionize how businesses and service providers deliver high-speed connectivity. As FTTX deployments expand globally, selecting the right optical transceivers becomes crucial for network performance and reliability.

Understanding 1.25G SFP Technology in Modern FTTX Infrastructure

The Small Form-Factor Pluggable (SFP) transceiver represents a significant evolution in network connectivity. These compact modules deliver gigabit Ethernet speeds while occupying half the space of legacy GBIC modules, enabling higher port density on switches and routers. For FTTX service providers building fiber-to-the-home, fiber-to-the-building, or fiber-to-the-premises networks, this space efficiency translates directly to reduced equipment costs and improved scalability.

Why FTTX Networks Rely on 1.25G SFP Modules

FTTX architectures demand versatile, reliable optical transceivers that can handle various deployment scenarios. The 1.25G SFP module excels in these environments due to its hot-swappable design, allowing network administrators to upgrade or replace transceivers without disrupting service. This flexibility is essential for FTTX operators who need to maintain continuous uptime while expanding their subscriber base.

The dual-fiber configuration commonly used in FTTX networks provides bidirectional communication over separate transmit and receive fibers, ensuring optimal signal quality and minimal interference. With transmission distances reaching up to 10 kilometers on single-mode fiber, these modules effectively bridge central offices to distribution points or directly to subscriber locations.

Key Advantages for FTTX Deployment

Operational Efficiency: Low power consumption under 1 watt reduces operational expenses across large FTTX installations. When deploying hundreds or thousands of transceivers across a service area, these energy savings become substantial.

Temperature Resilience: Extended operating ranges accommodate outdoor cabinets and environmentally challenging locations common in FTTX rollouts. The ability to function reliably in extreme temperatures ensures consistent service delivery regardless of climate conditions.

Future-Proof Investment: Compliance with IEEE 802.3z standards guarantees compatibility across multi-vendor FTTX ecosystems. Service providers can confidently mix equipment from different manufacturers without compatibility concerns.

Digital Diagnostics: Built-in monitoring capabilities allow real-time assessment of transceiver health, enabling proactive maintenance before issues affect FTTX subscribers. Network operations teams can monitor optical power levels, temperature, and voltage remotely.

Technical Specifications That Matter for FTTX

The 1310nm wavelength selection optimizes performance for FTTX middle-mile and last-mile connections. This wavelength provides excellent chromatic dispersion characteristics on single-mode fiber, making it ideal for distances encountered in typical FTTX deployments.

Transmit power ranging from -9.5 to -3 dBm ensures adequate signal strength across varying fiber plant conditions. The receiver sensitivity specification below -23 dBm provides sufficient link budget margin to accommodate fiber splices, connectors, and natural fiber attenuation found in FTTX outside plant installations.

Applications Across FTTX Architectures

Fiber-to-the-Home (FTTH): Connect optical line terminals at central offices to optical network units at subscriber premises.

Fiber-to-the-Building (FTTB): Link aggregation switches to building distribution points in multi-tenant environments.

Fiber-to-the-Premises (FTTP): Support point-to-point active Ethernet architectures for business-class FTTX services.

Passive Optical Network Backhaul: Interconnect OLT equipment with core network infrastructure in GPON or EPON-based FTTX systems.

Integration with Modern Network Equipment

These transceivers seamlessly integrate with fiber switches, routers, media converters, and server network interface cards from major manufacturers. The LC duplex connector interface has become the industry standard, ensuring universal compatibility across FTTX infrastructure components.

The I2C management interface enables sophisticated diagnostic capabilities through network management systems. FTTX operators can implement automated monitoring and alerting, reducing mean-time-to-repair when issues arise.

Quality Components for Reliable FTTX Operations

Premium optical transceivers incorporate carefully selected components to ensure long-term reliability. Self-developed optical devices optimized for specific wavelengths and distances provide consistent performance. Class-A ferrules minimize insertion loss and back reflection, critical factors in maintaining optimal optical power budgets across FTTX networks.

Imported chipsets from reputable manufacturers deliver stable signal processing and thermal management. Enhanced gold-plated contacts resist corrosion and ensure reliable electrical connections through thousands of insertion cycles.

Frequently Asked Questions

Q: What distance limitations should FTTX operators consider when deploying these modules?

A: These transceivers support up to 10 kilometers on standard single-mode fiber. For FTTX architectures requiring longer reaches, consider DWDM or higher-power variants. Most residential and business FTTX connections fall well within this range.

Q: Can these modules operate in existing FTTX networks with mixed equipment vendors?

A: Yes, these transceivers follow industry-standard protocols ensuring interoperability across multi-vendor FTTX environments. They work with Cisco, Juniper, HP, Dell, and other major networking equipment.

Q: How do environmental conditions affect module performance in outdoor FTTX cabinets?

A: Extended temperature range specifications allow operation in harsh outdoor environments typical of FTTX deployments. However, proper cabinet ventilation and temperature management remain important for optimal lifespan.

Q: What diagnostic parameters can FTTX network operators monitor?

A: Digital diagnostic monitoring provides real-time visibility into transmit power, receive power, temperature, voltage, and laser bias current. This telemetry enables predictive maintenance strategies.

Q: Are these transceivers suitable for both active Ethernet and PON-based FTTX architectures?

A: These modules primarily serve active Ethernet point-to-point FTTX deployments. PON systems require specialized OLT and ONU transceivers with different wavelength plans and burst-mode capabilities.

Q: How does power consumption impact large-scale FTTX deployments?

A: At under 1 watt per module, power consumption remains minimal. However, across thousands of ports in a service provider FTTX network, selecting efficient transceivers contributes to meaningful operational cost reductions and supports sustainability goals.

Q: What warranty coverage should FTTX operators expect?

A: Quality transceivers typically include three-year warranties covering defects and performance issues. This warranty period aligns well with typical FTTX equipment refresh cycles.

Q: Can these modules support both single-mode and multimode fiber in FTTX applications?

A: While these transceivers optimize for single-mode fiber typical in FTTX outside plant, they can operate over short multimode links within central offices or data centers supporting FTTX infrastructure.

Conclusion

Selecting appropriate optical transceivers forms a critical decision point for FTTX network success. The 1.25G SFP module provides the performance, reliability, and cost-effectiveness that service providers need when building or expanding fiber access networks. By understanding technical specifications, compatibility requirements, and operational considerations, FTTX operators can deploy networks that deliver exceptional subscriber experiences while maintaining healthy operational margins.

Whether launching new FTTX services or upgrading existing infrastructure, these transceivers offer a proven solution that balances performance requirements with budget constraints. Their widespread compatibility, robust design, and comprehensive diagnostic capabilities make them an intelligent choice for forward-thinking FTTX deployments.

 

Hot Tags: Optical Transceivers