Ruijie 10G SFP+ ER Optical Transceiver, 1550 nm, 40 km, XG-SFP-ER-SM1550

Introduction to the Ruijie 10G SFP+ ER (1550 nm, 40 km)

The Ruijie XG-SFP-ER-SM1550 is a 10G SFP+ ER optical transceiver designed for long-reach single-mode fibre links. Operating at 1550 nm and supporting distances up to 40 km over standard single-mode fibre (SMF), this hot-pluggable module targets service providers and enterprise networks that require reliable 10G uplinks, metro interconnects and fibre backbone extensions. Key features include a DFB transmitter, PIN receiver, Digital Diagnostic Monitoring (DDM/DOM) for real-time telemetry, low power consumption (≤ 1.5 W) and compliance with SFP+/MSA and IEEE 802.3ae standards.

• 10.3125 Gbps data rate (10GBASE-ER) for long-reach 10G links.
• 1550 nm DFB transmitter and PIN receiver with Duplex LC connector.
• Supports up to 40 km over single-mode fibre.
• Hot-pluggable SFP+ form factor for easy installation and replacement.
• Digital Diagnostic Monitoring (DDM/DOM) for optical power, temperature and other telemetry.
• Low power consumption (≤ 1.5 W) and compact mechanical profile.

Detailed specifications and benefits

Understanding the specifications of the XG-SFP-ER-SM1550 helps explain where it fits into modern networks and why it is a practical choice for many deployments.

• Wavelength:1550 nm — chosen for lower attenuation and better performance at long distances on SMF compared with shorter wavelengths.
• Connector:Duplex LC, the de facto industry standard for single-mode transceivers, which simplifies cabling and interoperability.
• Transmitter/Receiver:DFB transmitter paired with a PIN photodiode receiver provides stable optical output and suitable sensitivity for 40 km links.
• Tx power:Typical maximum average around +4 dBm and minimum around −4.7 dBm; receiver sensitivity is on the order of ≤ −14.1 dBm (OMA), with overload levels near −1 dBm.
• Extinction ratio:Approximately ≥ 3 dB, contributing to signal quality over extended distances.

• Data rate:10.3125 Gbps (10GBASE-ER) — suitable for high-throughput uplinks and aggregation ports.
• Maximum reach:Up to 40 km on standard single-mode fibre, making it appropriate for metro and long-haul campus links.
• Bit error ratio:1.0E-12, meeting typical telecom-grade expectations for 10G links.
• DDM/DOM support:Real-time access to transmit/receive optical power, temperature, laser bias current and other telemetry, which speeds troubleshooting and helps maintain predictable link health.
• Power:Low typical consumption (≤ 1.5 W) reduces thermal load and helps maintain higher port density in switches and routers.

• Form factor:SFP+ hot-pluggable module with compact dimensions (~56.5 × 13.5 × 8.5 mm) and light weight (~35 g), suitable for high-density installations.
• Operating temperature:Commercial grade from 0 °C to +70 °C; for outdoor or industrial installations, verify availability of extended-temperature variants.
• Standards:Compliant with IEEE 802.3ae, SFF-8431 and SFP+ MSA specifications; RoHS and Class 1 Laser Product safety standard.

Benefit summary: the combination of long reach, diagnostic telemetry and low power in a standard SFP+ package makes this transceiver a strong option for operators who need predictable 10G performance without committing to larger, higher-power form factors.

Use cases and scenarios where the module excels

The Ruijie 10G SFP+ ER is particularly well suited to several practical network scenarios:

Service providers and carriers often need 10G links between exchange points, central offices and aggregation sites across metropolitan areas. The 40 km reach at 1550 nm allows links between city data centres, regional aggregation points and client premises without resorting to higher-cost DWDM systems in many cases.

Large campuses, hospitals and universities that span multiple buildings or sites can use the ER module to bridge distances that exceed the reach of LR (10 km) modules. The SFP+ form factor fits existing 10G switch ports and fibre patching systems.

When leasing dark fibre or extending service access across longer spans, the 1550 nm wavelength often performs better because it is less sensitive to dispersion than shorter wavelengths at comparable reach budgets. The module’s diagnostic features help maintain SLAs and monitor link health remotely.

Enterprises deploying redundant 10G uplinks to secondary data centres can rely on ER-grade optics for geographic separation while preserving link simplicity and manageable power/space requirements.

Comparisons with similar products

When selecting optics for long-reach 10G applications, it helps to compare ER-class modules against other common types and vendor options.

• LR (10 km) — 1310 nm:LR modules are ideal for short campus links and many intra-building connections. They are typically less expensive but lack the reach required for metro links. If your span is under 10 km, LR may be a lower-cost choice.
• ER (40 km) — 1550 nm (this product):Balances cost and reach for many metro and inter-site needs without adding complex DWDM equipment.
• ZR (>80 km) — 1550 nm:ZR modules or DWDM-based solutions provide much longer reach but at higher cost and potentially higher power. Choose ZR if you require 80+ km connectivity or must traverse noisy spans where amplifiers or dispersion compensation are necessary.

Major switch and router vendors sell branded SFP+ modules that are often validated for full compatibility with their platforms. Third-party modules like the Ruijie XG-SFP-ER-SM1550 may offer cost savings and comparable performance but you should verify compatibility and any vendor-specific locking or firmware checks on your target equipment. Ruijie’s module follows industry standards (SFP+/MSA, IEEE 802.3ae) and includes DDM, which narrows the functional gap with OEM parts in many environments.

Suggested retail pricing for this module is around $399 (cost price example $321.47 depending on supplier). For many deployments, the ER transceiver’s combination of reach, diagnostics and low power delivers strong total cost of ownership compared with higher-power long-reach alternatives or the operational complexity of DWDM upgrades.

Customer feedback and representative reviews

While individual experiences vary by deployment, common themes reported by network administrators and integrators using ER-class SFP+ modules like the Ruijie XG-SFP-ER-SM1550 include:

• Reliable long-reach performance:Teams appreciate that 1550 nm ER modules can bridge campus and metro distances without repeaters or amplifiers in many cases.
• Diagnostic visibility:DDM/DOM is frequently cited as a helpful feature for proactive monitoring and quicker fault isolation, reducing truck rolls and troubleshooting time.
• Low power and thermal footprint:Installers report that SFP+ power characteristics simplify port density planning and heat management in high-density switches.
• Compatibility caveats:Some buyers note the importance of checking switch/router compatibility and vendor acceptance of third-party optics; confirming seller authenticity and warranty support is recommended.

These aggregated observations reflect common operational feedback rather than specific endorsements; always validate results in your own network environment.

Conclusion: Why choose the Ruijie XG-SFP-ER-SM1550?

The Ruijie 10G SFP+ ER (1550 nm, 40 km) transceiver offers a pragmatic balance of reach, performance and manageability for organisations needing reliable 10G connectivity across metro or extended campus distances. Its compliance with SFP+/MSA and IEEE standards, combined with DDM support and low power consumption, makes it a practical replacement or upgrade option for long-reach links where OEM alternatives may be more costly.

Before purchasing, confirm compatibility with your target equipment and enquire about supplier authenticity and warranty terms. For many service provider and enterprise scenarios — metro aggregation, campus interconnects, dark fibre links and redundant uplinks — the XG-SFP-ER-SM1550 represents a compelling, standards-based choice that delivers the long-reach capability and operational visibility required for modern 10G networks.