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The Hybrid Logic: Blue meets Green
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SC/UPC (Blue): The “Ultra Physical Contact” end. It’s the standard for general digital data transmission and enterprise LANs where a flat, high-precision polish is sufficient.
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SC/APC (Green): The “Angled Physical Contact” end. Featuring an 8-degree slant, it’s mandatory for CATV, GPON, and high-bit-rate systems to eliminate back-reflection.
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SM SX (Single Mode Simplex): A single 9/125μm OS2 fiber strand that supports long-distance communication with nearly infinite bandwidth capacity.
Teknik Performans Dökümü
For a reliable link, the transition between UPC and APC must be seamless. Our cables meet the following 2026 industry benchmarks:
| Şartname | SC/UPC Side | SC/APC Side | Professional Benefit |
| Connector Color | Blue | Green | Instant visual port matching |
| Geri Dönüş Kaybı | $\geq 50 \text{ dB}$ | $\geq 65 \text{ dB}$ | Protects source lasers from noise |
| Ekleme Kaybı | $\leq 0,3 \text{ dB}$ | $\leq 0,3 \text{ dB}$ | Minimal light signal attenuation |
| Elyaf Sınıfı | OS2 (9/125μm) | OS2 (9/125μm) | G.652.D/G.657.A1 compliant |
| Ceket Malzemesi | LSZH (Sarı) | LSZH (Sarı) | Fire-safe and building-code ready |
| Mating Cycles | $>1000$ zamanlar | $>1000$ zamanlar | Durable for frequent re-patching |
Why This Jumper is Essential for Modern Networks
1. Seamless Interoperability
As ISP networks upgrade to XGS-PON or 50G-PON, the “last mile” often uses APC connectors. However, the existing backbone might still be UPC. This cable provides the direct path to connect these two worlds without replacing entire patch panels.
2. Back-Reflection Protection
By using the APC (Green) end on your sensitive transmitter (like a CATV laser or an EDFA), you ensure that reflected light is directed out into the fiber cladding, maintaining a high return loss of $\geq 65\text{dB}$ even if the other end is a standard UPC.
3. Space-Efficient Simplex Design
For BiDi (Bi-directional) links, why use two fibers when one will do? The Simplex (SX) design reduces cable bulk in trays and is easier to manage in tight ODF (Optical Distribution Frame) cabinets.
Expert Q&A: Field Insights
Q: Can I plug the Blue end into a Green port just for a quick test?
A: No. This is the fastest way to ruin a connection. A UPC end is flat and an APC port is angled. Plugging them together creates a physical “point contact” that can scratch both ceramic ferrules and will definitely cause an air gap with massive signal loss.
Q: Why is the return loss different on each end?
A: Return loss is a property of the connector’s polish. The 8-degree angle on the APC (Green) end is mathematically designed to reduce reflection more effectively than the flat UPC (Mavi) end, which is why it has a higher rating (65dB vs 50dB).
Q: Is this cable compatible with 100G speeds?
A: Kesinlikle. Bu OS2 single-mode fiber core is more than capable of handling 100G, 400G, and even 800G data rates, provided your transceivers and network equipment are rated for those speeds.
Q: How do I identify this cable in a crowded rack?
A: Simply look at the connector boots and housings. One end will be Blue and the other will be Green. This color-coding is an international standard to prevent technicians from making incorrect connections.
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