Smart Product Number: 980C-HP
980/1550 nm Coupler Fiber
Nufern 980C-HP fiber is a high-performance, mid-NA fiber optimized for use by coupler manufacturers in the telecom industry. It features low, consistent splice and bend loss, and a design to minimize excess loss in the coupler. The fiber is produced with extremely tight second mode cutoff tolerance, and the high tensile strength critical for long-term reliability in tight bend radius applications. These high-performance specifications also result in improved production yields and reduced component manufacturer costs.
Optical Specifications
Operating Wavelength
980 – 1600 nm
Core NA
0.160
Mode Field Diameter
4.9 ± 0.3 µm @ 980 nm
7.7 ± 0.3 µm @ 1550 nmCutoff
930 ± 30 nm
Core Attenuation
≤ 3.0 dB/km @ 980 nm
Geometrical & Mechanical Specifications
Cladding Diameter
125.0 ± 1.0 µm
Core Diameter
4.4 µm
Coating Diameter
245.0 ± 15.0 µm
Coating Concentricity
< 5.0 µm
Core/Clad Offset
≤ 0.30 μm
Clad Non-Circularity
≤ 2.0 %
Coating Material
Acrylate
Operating Temperature Range
-55 to 85 °C
Short Term Bend Radius
≥ 6 mm
Long Term Bend Radius
≥ 13 mm
Prooftest Level
≥ 200 kpsi (1.4 GN/m²)
Comments
Bend Loss: The bend loss for 100 turns @ LTBR (nominal) is 0.001 dB @ 980, by design.
Bend Radius: The bend radius for 0.05 dB/100 turns is much less than LTBR @ 980 nm, by design.
Coating Requirements: UV Cured, Dual Acrylate
Features & Benefits
Exceptional uniformity and core/clad concentricity—Low, consistent splice loss to telecom components
Extremely tight second mode cutoff tolerance—High yield coupler manufacturing
Higher proof test levels—Critical for long-term reliability in tight bend applications
Typical Applications
WDM pump/signal couplers for EDFAs
CATV couplers; Tap couplers
Bi-directional splitters and combiners
Ultra-compact components requiring small bend radii
商品属性 [波长] 980 - 1600 nm [掺杂类型] Ge [芯径大小] 4.4 µm [首包层直径] 125 µm [数值孔径] 0.160 [光学包层] Single