Smart Product Number: 780-HP
780 nm Select Cutoff Single-Mode Fiber
Nufern’s 780-HP high-performance select cutoff single-mode fiber is optimized at near IR wavelengths. This application-specific fiber was developed for applications requiring coupler generation, diode pigtails and unique delivery needs for the near IR continuum. Compared to the best fibers available today, 780-HP fiber features higher proof test levels and tighter second mode cutoff tolerance. These features result in higher strength, increased component reliability, improved production yields and reduced costs for component manufacturers.
Optical Specifications
Operating Wavelength
780 – 970 nm
Core NA
0.130
Mode Field Diameter (Gaussian )5.0 ± 0.5 µm @ 850 nm
Cutoff
730 ± 30 nm
Core Attenuation
≤ 3.5 dB/km @ 850 nm
≤ 4.0 dB/km @ 780 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
≤ 0.50 μm
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 at 780 nm (100 turns, 13 mm radius) is <0.001 dB, by design.
Bend Radius: The Bend Radius for 0.05 dB per 100 turns at 780 nm is less than LTBR, by design.
Coating Requirements: UV Cured, Dual Acrylate.
Special Core Dopants: SiO2/GeO2
Features & Benefits
Superior fiber geometrical tolerances — Improved connectorization and coupling performance
Extremely tight second mode cutoff tolerance — Enhanced component reproducibility
Higher proof test level — Greater reliability for tight bend applications
Typical Applications
Couplers
Diode pigtails
商品属性 [波长] 780 - 970 nm [掺杂类型] Ge [芯径大小] 4.4 µm [首包层直径] 125 µm [数值孔径] 0.130 [光学包层] Single