3. Optical Performance
3.1 Insertion Loss (IL)
Connector | Fiber Type | Standard Grade (Max/Typ) | Elite Grade (Max/Typ) | Test Standard |
MTP | Single‑mode (APC) | ≤0.75 dB / ≤0.35 dB | ≤0.35 dB / ≤0.20 dB | IEC 61300‑3‑34 |
MTP | Multimode (PC) | ≤0.60 dB / ≤0.35 dB | ≤0.35 dB / ≤0.20 dB | IEC 61300‑3‑34 |
LC | All | ≤0.30 dB | ≤0.30 dB | IEC 61300‑3‑6 |
3.2 Return Loss (RL)
Connector | Single‑mode APC | Multimode PC |
MTP | ≥60 dB | ≥25 dB |
LC | APC ≥60 dB; UPC ≥50 dB | ≥35 dB |
3.3 Mechanical & Environmental Optical Stability
• Durability: Typical IL change <0.3 dB after 200 matings
• Interchangeability: ≤0.2 dB
• Tensile strength: >70 N
• Operating temperature: −40 °C to +85 °C
4. Connector Geometry (3D Interferometer)
4.1 MTP End‑Face Geometry (IEC 61300‑3‑30)
Parameter | Min | Max |
ROC‑X (ABS) | 2000 mm | — |
ROC‑Y (ABS) | 50 mm | — |
Angle‑X | −0.2° | −0.2° |
Angle‑Y (APC) | 7.85° | 8.15° |
Angle‑Y (PC) | −0.2° | −0.2° |
Fiber height | 1000 nm | 3500 nm |
Max DH (all fibers) | −300 nm | 300 nm |
DH adjacent | −300 nm | 300 nm |
DH average | −300 nm | 300 nm |
Core dip (MM only) | −200 nm | 300 nm |
4.2 LC End‑Face Geometry
Parameter | Connector | PC | APC |
Radius of curvature | LC | 7–25 mm | 5–15 mm |
Apex offset | All | ≤50 μm | — |
Fiber spherical height | All | ±100 nm | — |
Angular offset | All | — | 8° ±0.5° |
5. End‑Face Quality (IEC 61300‑3‑35:2015)
5.1 Single‑mode LC
Zone | Range (μm) | Scratches | Defects |
A (Core) | 0–25 | None | None |
B (Cladding) | 25–115 | None | None |
C (Adhesive) | 115–135 | None | None |
D (Contact) | 135–250 | None | None |
E (Ferrule) | Full | None | None |
5.2 Multimode LC
Zone | Range (μm) | Scratches | Defects |
A (Core) | 0–65 | None | None |
B (Cladding) | 65–115 | None | None |
C (Adhesive) | 115–135 | None | None |
D (Contact) | 135–250 | None | None |
E (Ferrule) | Full | None | None |
6. Compliance & Standards
• IEC 61754‑7, IEC 61755
• Telcordia GR‑1435‑CORE
• JIS C5982
• TIA‑604‑5 (FOCIS5)
• TIA‑568‑C structured cabling
• 10G Fibre Channel
• IEEE 802.3 (40G, 100G)
7. Typical Applications
• Data center high‑density patching
• Direct QSFP+ to 4×SFP+ transceiver links
• Optical communication and access networks
• Storage area networks (SAN)
• High‑density rack‑and‑panel architectures
8. Physical Configuration
• Fiber count: 8 fibers
• Connector A: Male MTP (multi‑fiber)
• Connector B: 8× simplex LC
• Fan‑out tubing: 0.9 mm
• Nominal length: 0.30 m
• Cable form: Round/oval/ribbon options available
• Color‑coded housings to distinguish fiber mode, polish, and performance grade
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