Compare Model Drawings, CAD & Specs Index Profile Fiber Type Mode Field Diameter, Nominal Availability Price
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Step Polarization Maintaining 6.0 - 8.0 µm @1064 nm
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Step Polarization Maintaining 4.1 - 7.7 µm @830 nm
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High Birefringence

The secret of this excellent performance, is the extreme birefringence that only a ‘Bow-Tie’ geometry Polarization Maintaining (PM) fiber can create. With polarization beat-lengths approaching 0.5mm at 633nm, Fibercore Zing™ can provide 100nm of practical, usable polarizing bandwidth, providing a wide variety of packaging and source options – cabled or coiled, narrow line width laser or broadband Amplified Spontaneous Emission (ASE) source.

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

Bow-Tie Polarization Maintaining Fiber

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.

Tunable Polarizing Window

The polarizing window may be tuned by changing the length of the fiber and the coil diameter, either individually or together, altering the central wavelength and the width of the operating window.


  • Fiber Lasers
  • Laser Diodes
  • FOGs
  • Current Sensors
  • Interferometric Sensors
  • ASE Sources