When considering the performance parameters of MPO cables, there are several key factors to look for to ensure that the cables meet your specific needs and provide reliable performance. Here are some of the most important performance parameters to consider:
1. Fiber Type
- Single-Mode vs. Multi-Mode: MPO cables can support both single-mode and multi-mode fiber types. Single-mode fibers are typically used for long-distance transmission, while multi-mode fibers are commonly used for short-distance applications within a building or campus.
- Fiber Grades: For multi-mode fibers, look for grades such as OM3 or OM4, which offer higher bandwidth and lower attenuation than standard multi-mode fibers.
2. Connector Types
- MPO/MTP Connectors: MPO connectors are the standard for high-density fiber optic connections, and MTP connectors are a registered trademark of US Conec that offers similar performance but with stricter tolerances for improved performance.
- Branch Connectors: Look for branch connectors such as FC, LC, SC, or ST, depending on your specific application and equipment compatibility.
3. Insertion Loss (IL)
- MPO End: Typical values should be ≤0.50dB, with a maximum of ≤0.70dB.
- Branch End Connectors: Typical values should be ≤0.20dB, with a maximum of ≤0.30dB.
Insertion loss is a measure of the signal loss that occurs when light passes through a connector or splice. Lower insertion loss values indicate better performance.
4. Return Loss (RL)
- MPO End (APC): ≥50dB
- Branch End Connectors (UPC/APC): ≥50dB (UPC) or ≥60dB (APC)
Return loss is a measure of the amount of light that is reflected back from a connector or splice. Higher return loss values indicate better performance and fewer reflections, which can reduce noise and improve signal quality.
5. Durability and Reliability
- 插拔次数: MPO ends should be able to withstand at least 500 mating cycles with a typical change in insertion loss ≤0.20dB.
- Branch End Connectors: Should be able to withstand at least 1000 mating cycles with a typical change in insertion loss ≤0.20dB.
- Tensile Strength: Look for cables that have a vertical tensile strength of ≥120N (except for 0.9mm cables), which indicates their ability to withstand mechanical stress.
6. Operating and Storage Temperatures
- Operating Temperature: -20°C to +70°C
- Storage Temperature: -40°C to +85°C
These temperature ranges indicate the environmental conditions in which the cables can operate and be stored reliably.
7. Fiber Core Count and Arrangement
- Common Core Counts: 8, 12, 24, 48, and 72 fibers are common options.
- Fiber Arrangement: Look for cables with straight fiber arrangements or specific arrangements such as 12-fiber 8+4 or 24-fiber dual-row arrangements, depending on your equipment and application needs.
8. Industry Certifications
- RoHS and UL Certifications: These certifications indicate that the cables comply with specific health, safety, and environmental standards and have undergone rigorous testing to ensure their safety and reliability.
9. Cleanliness and Inspection
- End-Face Inspection: MPO connectors have a large surface area, making it crucial to clean and inspect them properly. Use tools and standards such as the FI-7000 FiberInspector Pro and IEC 61300-3-35 to ensure the cleanliness and integrity of the fiber end faces.
By considering these performance parameters, you can ensure that your MPO cables meet your specific needs and provide reliable performance in a wide range of applications.
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