40km Optical Module Specifications
40km optical modules are designed for long-distance transmission over single-mode fiber, typically operating at 1550 nm for 10G and 1310–1550 nm for 40G/100G, with LC duplex or QSFP interfaces and optical link budgets around 15 dB for 10G and higher for 100G.
10GBASE-ER SFP+ Modules
Key Specifications:
- Data Rate: 10 Gbps (supports multi-rate 1.25–11.32 Gbps for Ethernet, Fibre Channel, and SONET/SDH)
- Wavelength: 1550 nm DFB laser
- Maximum Reach: 40 km over single-mode fiber (G.652/OS2)
- Connector Type: Duplex LC/UPC
- Optical Link Budget: ~15 dB, supporting long-haul metro and enterprise links
- Monitoring: Digital Optical Monitoring (DOM/DDM) for real-time transmit/receive power, temperature, voltage, and laser bias current
- Form Factor: Hot-pluggable SFP+ (SFF-8431 compliant)
- Power Supply: +3.3 V single supply
- Applications: Metro Ethernet, campus backbone, data center interconnects, and telecom access networks
40GBASE-ER4 QSFP+ Modules
Key Specifications:
- Data Rate: 40 Gbps (4x10G channels)
- Wavelength: 1310 nm for ER4, compliant with IEEE 802.3bm and ITU-T G.695
- Maximum Reach: 40 km over single-mode fiber
- Connector Type: QSFP+ MSA interface, supports 4x10G OTN client interfaces
- Monitoring: Digital diagnostics via I2C interface
- Compliance: RoHS, IEEE 802.3bm, OTU3, and QSFP+ MSA standards
- Applications: 40G Ethernet links, data center interconnects, metro and telecom backbone networks
100G 40km Modules
Key Specifications:
- Data Rate: 100 Gbps (QSFP28)
- Wavelength Options: OWDM (O-band 1295–1311 nm), ER4L, 4W40, BiDi
- Maximum Reach: 40 km without amplifiers or dispersion compensation
- Power Consumption: 4.5–5.5 W depending on module type
- Monitoring: Advanced DOM with FEC support for error correction and link stability
- Applications: DCI, metro networks, telecom backbone, high-bandwidth multi-channel scenarios
Summary
40km optical modules are optimized for long-distance, high-speed transmission over single-mode fiber. 10G SFP+ modules are ideal for extended-reach Ethernet and storage networks, while 40G and 100G QSFP/QSFP28 modules support higher bandwidth and multi-channel applications. Key considerations include wavelength, optical link budget, connector type, monitoring capabilities, and power consumption, ensuring compatibility with network devices and deployment environments. These modules are widely used in enterprise backbones, metro networks, data center interconnects, and telecom infrastructure.
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