The Tengchi G.657.A2 200µm singlemode fiber offers low attenuation, low dispersion, and excellent macro‑bend performance for FTTH and cable applications.
The 亮睿®+特微TM G.657.A2 200µm singlemode fiber from Tengchi (Nanjing) Fiber Co., Ltd. uses an optimized coating design that keeps the glass diameter the same as conventional 245 µm fibers while reducing the overall coating diameter. This enables superior optical and transmission performance across the full 1260‑1625 nm waveband and full compatibility with ITU‑T G.657.A2 and IEC 60793‑2‑50 standards.
Key characteristics include very low attenuation (≤ 0.34 dB/km at 1310 nm, ≤ 0.20 dB/km at 1550 nm), low dispersion, low PMD, excellent attenuation uniformity, and outstanding macro‑bend resistance (minimum bend radius 7.5 mm). The fiber is suited for FTTH, large‑core cables, micro‑cables and other high‑density deployment scenarios, reducing cable diameter and installation cost. This manual is written in Chinese.
| Attenuation at 1310 nm | ≤ 0.34 dB/km |
|---|---|
| Mode Field Diameter (1310 nm) | 8.7 ± 0.4 µm |
| Coating Diameter | 190 ± 5 µm |
| Macro‑bend loss at 7.5 mm radius (1550 nm) | ≤ 0.5 dB |
| Core/Cladding concentricity error | ≤ 0.5 µm |
The fiber can be bent to a minimum radius of 7.5 mm with a loss not exceeding 0.5 dB at 1550 nm.
After 30 days at 85 °C and 85 % relative humidity, the additional attenuation remains ≤ 0.05 dB/km at both 1310 nm and 1550 nm.