Description
Why LC + APC is the preferred combination
LC connectors are known for their small footprint and secure latch mechanism, while APC polishing delivers exceptionally low back-reflection.
Together, they create a connector that supports:
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High-density patch panels
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Long-distance single-mode transmission
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Sensitive optical transceivers
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Stable FTTH signal quality
This is why LC APC connectors are becoming standard in modern access and data center fiber networks.
Designed for 0.9mm tight-buffer fiber
| Cable Type | Typical Application |
|---|---|
| 0.9mm tight buffer | Pigtails, equipment jumpers, internal fiber routing |
This size allows for compact routing inside ODFs, ONTs, and optical modules, without sacrificing mechanical reliability.
Optical performance
| Parameter | Typical Value |
|---|---|
| Fiber Type | Single-mode (9/125 µm) |
| Polish Type | APC (8° angled) |
| Insertion Loss | ≤ 0.30 dB |
| Return Loss | ≥ 60 dB |
| Operating Wavelength | 1310 nm / 1550 nm |
| Mating Durability | ≥ 1000 cycles |
These characteristics make it suitable for PON, FTTH, CATV, and long-haul links where reflection control is critical.
Mechanical and structural design
| Item | Specification |
|---|---|
| Connector Type | LC Simplex |
| Fiber Size | 0.9mm |
| Ferrule | 1.25mm zirconia ceramic |
| Latching System | RJ-style LC latch |
| End-face | APC angled polish |
| Operating Temperature | –40°C to +75°C |
The LC latch allows quick push-pull connection, while the ceramic ferrule ensures precise fiber alignment and long-term stability.
Where this connector is typically used
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FTTH & PON subscriber links
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Data center patch panels
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High-density ODF frames
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Optical transceivers (SFP, GPON, XG-PON, etc.)
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CATV and RF-over-fiber systems
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Optical test and monitoring equipment
Professional Q&A
Q1: Why use APC instead of UPC for LC connectors?
APC polishing provides much higher return loss (≥60 dB), which is important for PON, CATV, and long-distance single-mode links where reflected light can degrade performance.
Q2: Can LC APC connect to LC UPC?
No. APC and UPC have different end-face geometries. Mating them causes high insertion loss and possible ferrule damage.
Q3: Is 0.9mm suitable for outdoor drop cables?
0.9mm is mainly used for indoor pigtails and equipment jumpers. Outdoor FTTH drop cables normally use 2.0mm or 3.0mm jackets with reinforced strength members.
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