Compare Model Drawings, CAD & Specs Availability Price
Polarization Maintaining Optical Fiber, Erbium Doped, PM EDFAs


  • Fiber Type
    Erbium Doped
  • Mode Field Diameter, Nominal
    5.1 - 6.7 @1550 nm µm
  • Cladding Diameter
    125 ±1 µm
  • Coating Diameter
    245 ±15 µm
  • Cable Diameter
    2.5 mm
  • Operating Wavelength
    980/1550 nm
  • Cut-off Wavelength
    860 - 960 nm
  • Buffer Coating Material
    Dual Acrylate
  • Maximum Attenuation
    ≤20 @1200 nm dB/km
  • Numerical Aperture
    0.22 - 0.26
  • Proof Test
    100 kpsi
  • Absorption at Pump/Peak
    10 @980nm12 - 27 @1531 dB/m


Bow-Tie Polarization Maintaining Design

The core is flanked by areas of high expansion, boron-doped glass, which shrink back more than the surrounding silica. Tension caused induces birefringence (creating two different indices of refraction: a higher index parallel and a lower index perpendicular to the applied stress).

Cross section diagram of the Bow-Tie Polarization Maintaining Fiber.

High Birefringence

Fibercore uses ‘Bow-Tie’ Stress Applying Parts (SAPs) to create birefringence in the core. The design of these highly efficient SAPs generate very high birefringence without excessive stress, allowing polarization orientation to be controlled effectively across a fiber system. The ‘Bow-Tie’ design is capable of creating more birefringence than any other stressed design. This is simply because it is based on two opposing wedges, the most simple and efficient means of applying stress to a point.

“Bow-Tie” cladding preserves polarization with stress-induced intrinsic birefringence. The fast axis is oriented horizontally.

IsoGain™ Erbium Doped Fiber Design

Fibercore’s IsoGain Erbium Doped Fibers (EDFs) utilize a core composition that has been engineered to generate a substantially flattened wavelength response that closely matches that of other leading fiber types.

Erbium Doped PM Fiber Applications

F-DHB1500 is invaluable in mode-locked fiber lasers, or in any specialized that demand polarization maintenance. With high peak absorption, F-DHB1500 is particularly suitable for small gain length EDFAs and research applications requiring very short active fiber regions.

Volume Discount

The following volume discount schedule is automatically applied when ordering continuous lengths of bare optical fiber ≥10 m:

  • 10 - 49 m: 15%
  • 50 - 99 m: 22%
  • 100 - 499 m: 25%
  • ≥ 500 m: 28%

Discount applicable to continuous length of fiber only.