Used when quasi-single-mode operation is required, this passive fiber is tailored to match most commercially available doped fibers. Its low background losses make this fiber a good choice for the design and manufacturing of passive components used in fiber lasers and amplifiers.

Features & Benefits
  • Compatible with industry-standard active fibers
  • Low background losses
  • Excellent geometrical properties
  • Passive component manufacturing
  • Fiber lasers and amplifiers
  • Laser marking & engraving
Core Numerical Aperture
0.09 – 0.11
Background Loss @ 1200 nm (dB/km)
< 10.0
Geometrical & Mechanical
Core Diameter (µm)
8 ± 1
Cladding Diameter (µm)
125 ± 2.0
Core/Cladding Concentricity Error (µm)
< 1.0
Coating Diameter (µm)
245 ± 10

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