Article Overview
A 1490 nm single-mode single-core fiber optic module is typically an SFP transceiver designed for long-distance, high-speed optical communication over single-mode fiber.
Key Specifications
- Wavelength: 1490 nm for the transmitter, often paired with 1310 nm or 1550 nm for the receiver depending on the module type .
- Fiber Type: Single-mode fiber (SMF), single-core, typically 9/125 µm core/cladding diameter .
- Data Rate: Supports 1.063–1.25 Gbps for standard SFP modules, with some SFP+ modules supporting 10 Gbps .
- Transmission Distance: Up to 10 km for standard SFP modules; extended distances (up to 100 km) are possible with SFP+ modules using EML lasers .
- Connector Type: LC connector is standard for single-fiber bidirectional modules .
- Laser Type: DFB (Distributed Feedback) or EML (Electro-absorption Modulated Laser) for high performance and stable wavelength .
- Operating Temperature: Typically 0–70°C for commercial-grade modules .
- Diagnostics: Many modules support Digital Diagnostic Monitoring (DDM/DOM) for real-time monitoring of temperature, optical power, voltage, and laser bias .
Applications
- Telecommunications: ISP Gigabit Ethernet links and long-haul optical networks .
- Enterprise Networks: LAN and SAN connections in data centers .
- Fiber Channel: 1G Fiber Channel links for storage networks .
- Plug-and-Play: Hot-pluggable SFP modules allow easy installation in switches, routers, NICs, and servers .
Advantages
- Single-core single-mode design reduces fiber cabling complexity and allows bidirectional communication over a single fiber strand.
- High reliability with CE/RoHS compliance and standardized SFP form factor ensures compatibility across multiple vendors .
- Real-time monitoring via DDM helps prevent network downtime by providing operational diagnostics .
Purchasing Options
Modules with 1490 nm wavelength are widely available from vendors like Zyxel, Gearlink, FS, and distributors such as Mouser Electronics . When selecting a module, ensure compatibility with your network equipment, required distance, and data rate. This type of module is ideal for long-distance, high-speed optical links where single-mode fiber is deployed, providing efficient, reliable, and manageable network connectivity.
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