DG-40G-LR-SM1310 is a 40G QSFP+ single-mode fiber transceiver for long-range 40 Gigabit Ethernet links. Supports up to 2 km over SMF using CWDM wavelengths around 1310 nm, compliant with IEEE 802.3ba 40GBASE-LR4/IR4.
The Data General DG-40G-LR-SM1310 is a high-performance 40 Gbps QSFP+ optical transceiver designed for long-range single-mode fiber applications. It operates using four CWDM wavelengths (1271, 1291, 1311 and 1331 nm) that are multiplexed into a single optical signal, enabling reliable 40G transmission up to 2 km over standard single-mode fiber (SMF).
Compliant with IEEE 802.3ba 40GBASE-IR4, QSFP+ MSA, and SFF-8436, this module ensures broad interoperability with 40G-capable switches, routers, and data center equipment. On the receive side, the optical signal is de-multiplexed back into four channels, each converted into electrical data streams.
The module supports Digital Diagnostic Monitoring (DDM) via a 2-wire serial interface, allowing real-time monitoring of temperature, supply voltage, bias current, and optical transmit and receive power. Featuring a hot-pluggable QSFP+ form factor, low power consumption, and robust EMI performance, the DG-40G-LR-SM1310 is an ideal solution for data center interconnects, enterprise backbones, and high-speed campus networks requiring stable 40G connectivity over single-mode fiber.
• Aggregate data rate up to 40 Gbps.
• 4 × 10 Gbps CWDM channels (1271 / 1291 / 1311 / 1331 nm).
• Transmission distance up to 2 km over single-mode fiber.
• QSFP+ LR4 / IR4 compliant.
• Duplex LC connector.
• Compliant with QSFP+ MSA and SFF-8436.
• Digital Diagnostic Monitoring (DDM) support.
• Hot-pluggable QSFP+ form factor.
• Low power consumption (typ. 2.5 W, max 3.5 W).
• All-metal housing for enhanced EMI shielding.
• RoHS compliant.
• Class 1 laser safety compliant.
Optical Characteristics
• Wavelengths: 1271 / 1291 / 1311 / 1331 nm (CWDM)
• Optical modulation amplitude (OMA per lane): –2 to +3.5 dBm
• Receiver sensitivity (per lane): –11.5 dBm
• Side Mode Suppression Ratio (SMSR): ≥ 30 dB
• Optical extinction ratio: ≥ 3.5 dB
Fiber & Distance
• Fiber type: Single-Mode Fiber (SMF)
• Maximum distance: 2 km
Electrical & Interface
• Aggregate data rate: 40 Gbps
• Data rate per channel: 10.3125 Gbps
• Connector: LC duplex
• Interface: QSFP+
• Power supply: 3.3 V
• Power consumption: 2.5 W typical / 3.5 W max
Environmental
• Operating temperature: 0 °C to +70 °C
• Storage temperature: –40 °C to +85 °C
• Operating humidity: 0% to 85% (non-condensing)
Standards & Compliance
• IEEE 802.3ba (40GBASE-IR4)
• QSFP+ MSA
• SFF-8436
• Digital Diagnostic Monitoring (DDM)
• RoHS
• Class 1 Laser Product
Secure connectivity for professional environments.
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