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SM-EYDF-6/125-HE

CATV Amplifier 6/125 Er:Yb-Doped Double Clad Fiber

Nufern's proprietary rare earth doping technology is used to deliver Er:Yb co-doped fibers with industry leading tolerances on the key spectroscopic parameters. This ensures the essential lot-to-lot reproducibility required for volume manufacturing of high power CATV and telecom optical amplifiers at 1550 nm. With a core composition optimized for all pump wavelengths (915–976 nm), these fibers demonstrate high efficiency and high power operation without rollover, enabled by the optimized double clad fiber design.
Applications
  • CATV and Telecom amplifiers
Features & Benefits
  • Single-mode core design — Low splice loss to transmission fiber
  • Double clad design — High power performance and high power conversion efficiency
  • Optimized core composition — High 915–976 nm pump efficiency
  • All fiber proof tested to > 100 kpsi — Critical for ensuring long term reliability when coiling
  • Tight mechanical and optical tolerances — High yield and uniformity in device manufacturing

Optical Specifications

Operating Wavelength1530–1625 nm
Mode Field Diameter6.75 ± 0.75 µm @ 1550 nm
Peak Core Absorption40 ± 10 dB/m near 1535 nm
Second Mode Cut-Off1440 ± 80 nm
Peak Cladding Absorption0.75 ± 0.15 dB/m @ 915 nm
Core Numerical Aperture (nominal)0.18
Cladding Numerical Aperture (5%)≥ 0.46

Geometrical & Mechanical Specifications

Clad Diameter125.0 ± 3.0 µm
Coating Diameter245 ± 15 µm
Core-Clad Concentricity≤ 1.0 µm
Outer Cladding MaterialLow Index Polymer
Proof Test Level≥ 100 kpsi (0.7 GN/m²)

Note: Perfectly matched passive versions are available for many of our active fibers.
See our Component and Delivery Fibers cheat sheet. (PDF)

RoHS Compliant