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Huawei SDH Single-Mode Single-Fiber Optic Module
Huawei SDH single-mode single-fiber optic modules are designed for long-distance, bidirectional transmission over a single optical fiber, supporting high-speed data rates and diagnostic monitoring.
Overview
Huawei single-mode single-fiber optic modules are fiber optic transceivers that operate over single-mode fiber (SMF), enabling long-distance communication with minimal signal loss. These modules are commonly used in SDH networks, GPON systems, and enterprise or ISP fiber deployments. They support both upstream and downstream data transmission through a single fiber, often using different wavelengths for bidirectional communication to maximize fiber utilization .
Key Specifications
- Fiber Type: Single-mode fiber (SMF)
- Transmission Mode: Single-fiber bidirectional (BIDI) or unidirectional depending on module type
- Wavelengths: Typically 1310 nm for upstream and 1490 nm for downstream in GPON applications
- Data Rates: Up to 2.488 Gbps downstream and 1.244 Gbps upstream for GPON modules; SFP+ modules like 10GBASE-LR support 10 Gbps
- Optical Budget: Example GPON Class B+ module has a minimum guaranteed optical budget of 29.5 dB, sufficient for distances up to 20 km under standard conditions
- Interface: Standard SC connector for GPON modules; SFP/SFP+ modules use LC connectors
- Temperature Range: 0°C to 70°C for standard operation
- Diagnostics: Support for DDM/DOM (Digital Diagnostic Monitoring) to monitor real-time operating conditions
Applications
- GPON Networks: Fiber-to-the-Home (FTTH) deployments for ISPs
- Enterprise Networks: High-speed backbone connections using SFP+ modules
- SDH Networks: Long-distance synchronous digital hierarchy links over single-mode fiber
- Data Centers: Interconnects for Huawei CloudEngine and S-series switches
Operational Considerations
- Bidirectional Transmission: Single-fiber BIDI modules transmit and receive on different wavelengths, saving fiber resources but requiring careful wavelength separation to avoid interference .
- Certification: Only Huawei-certified modules ensure reliable operation on Huawei switches; non-certified modules may cause instability and are not supported by Huawei .
- Compatibility: Modules like OSX010000 (10GBASE-LR SFP+) are widely compatible with Huawei CloudEngine, S-series switches, AR-series routers, and OceanStor storage platforms .
Summary
Huawei SDH single-mode single-fiber optic modules provide efficient, long-distance, and high-speed optical transmission over a single fiber. They are ideal for GPON, SDH, and enterprise network applications, offering bidirectional communication, diagnostic monitoring, and compliance with Huawei certification standards to ensure network reliability and performance .
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