Active Optical Module Models and Specifications
Active Optical Modules (AOMs) are high-speed, hot-pluggable transceivers that convert electrical signals to optical signals, supporting data rates from 1G to 400G over fiber with defined link lengths, form factors, and diagnostic capabilities.
Overview
Active Optical Modules (AOMs) are used to extend high-speed network connectivity over fiber, offering longer reach and lower power consumption compared to copper cables. They are commonly deployed in data centers, enterprise networks, and telecom environments. AOMs include SFP, SFP+, SFP28, QSFP, QSFP-DD, OSFP, and DSFP form factors, each supporting different data rates and link distances .
Key Specifications
1. Data Rate and Form Factor
- SFP: 1–4 Gbps
- SFP+: up to 10 Gbps
- SFP28: 25 Gbps
- QSFP/QSFP-DD/OSFP: 40G to 400G
- Modules are hot-swappable and adhere to Multi-Source Agreements (MSA) for mechanical dimensions and pinouts . 2. Optical Parameters
- Fiber Type: Single-mode (SMF) or Multi-mode (MMF, e.g., OM3/OM4/OM5)
- Wavelengths: Typically 850 nm for short-range MMF, 1310 nm or 1550 nm for SMF
- Link Lengths: Range from 1 m (short-reach AOCs) to 80 km (long-haul SMF transceivers) depending on module type and fiber . 3. Electrical and Interface Standards
- Compliant with SFP+ MSA, SFF-8431, SFF-8472, and IEEE 802.3 standards
- Supports 10G Ethernet, CPRI, InfiniBand, and Fiber Channel
- Electrical interface ensures compatibility with host switches and routers . 4. Diagnostics and Monitoring
- Digital Diagnostic Monitoring (DDM/DOM) provides real-time monitoring of temperature, voltage, and Tx/Rx optical power
- Enables proactive network management and troubleshooting . 5. Environmental and Compliance
- RoHS compliant and meets industry environmental standards
- Some modules support extended operating temperature ranges for industrial applications . 6. Active Optical Cables (AOCs)
- Pre-terminated fiber cables with integrated transceivers
- Offer plug-and-play connectivity with link lengths typically from 1 m to 30 m
- Reduce signal loss and simplify deployment in high-density racks .
Deployment Considerations
- Verify line rate compatibility with host equipment
- Match fiber type and connector (LC, MPO) to network infrastructure
- Check link budget and maximum supported distance
- Ensure DDM/DOM support for monitoring and diagnostics
- Confirm vendor datasheet specifications for electrical and optical parameters, not just MSA compliance . Active Optical Modules provide scalable, high-performance connectivity for modern networks, combining high data rates, long reach, and diagnostic capabilities to support demanding applications in data centers and enterprise environments.
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