Spun HiBi Fiber

Bow-Tie spun fiber for Faraday effect current sensors

  • Circularly birefringent
  • Supported by full range of complementary fibers
  • Higher Verdet constant at 1310nm than at 1550nm

Typical Applications:

  • Current sensors
  • Current transformers
  • Faraday effect sensors

The spun HiBi fiber allows highly sensitive and accurate current sensing over a wide range of environmental conditions including temperature variation and vibration, making it suitable for current transformers deployed outdoors in real-life applications. When used in conjunction with Fibercore’s PM fiber for delay lines and ZING™ for depolarizers, world-class current sensors can be achieved.

    Comparison
    SHB1250 (7.3/80)–2.5mmSHB1250 (7.3/80)SHB1250 (7.3/125)SHB1500 (8.9/125)
    Operating Wavelength (nm)1260-15101260-15101260-15101510-1650
    Cut-Off Wavelength (nm)1100-12501100-12501100-12501360-1500
    Numerical Aperture0.14-0.170.14-0.170.14-0.170.13-0.16
    Mode Field Diameter (μm)6.2-7.8 @1310nm6.2-7.8 @1310nm6.2-7.8 @1310nm7.9-9.9 @1550nm
    Attenuation (dB/km)≤5 @1310nm≤5 @1310nm≤5 @1310nm≤3 @1550nm
    Circular Beat-Length (mm)63-135 @1310nm63-110 @1310nm63-110 @1310nm86-160 @1550nm
    Spin Pitch (mm) Nominal2.54.04.04.0
    Proof Test (%)1 (100 kpsi)1 (100 kpsi)1 (100 kpsi)1 (100 kpsi)
    Cladding Diameter (μm)80 ± 1.580 ± 1.5125 ± 2125 ± 2
    Core Cladding Concentricity (μm)≤1.0≤1.0≤1.0≤1.0
    Coating Diameter (μm)165 ± 5165 ± 5245 ± 7245 ± 7
    Coating TypeDual Layer AcrylateDual Layer AcrylateDual Layer AcrylateDual Layer Acrylate
    Operating Temperature (ºC)-55 to +85-55 to +85-55 to +85-55 to +85
    Product Variants Explained
    SHB1250(7.3/80) - 2.5mmSpun HiBi Fiber with an 80µm cladding diameter, designed for use around 1310nm and with a 2.5mm spin pitch.
    SHB1250(7.3/80)Spun HiBi Fiber with an 80µm cladding diameter, designed for use around 1310nm
    SHB1250(7.3/125)Spun HiBi Fiber with an 125µm cladding diameter, designed for use around 1310nm
    SHB1500(8.9/125)Spun HiBi Fiber with an 125µm cladding diameter, designed for use around 1500nm

     

    Operating Wavelength (nm) 1260 - 1510
    Cut-Off Wavelength (nm) 1100 - 1250
    Numerical Aperture 0.14 - 0.17
    Mode Field Diameter (μm) 6.2 - 7.8 @1310nm
    Attenuation (dB/km) ≤5 @1310nm
    Circular Beat-Length (mm) 63 - 135 @1310nm
    Spin Pitch (mm) Nominal 2.5
    Proof Test (%) 1 (100 kpsi)
    Cladding Diameter (μm) 80 ± 1.5
    Core Cladding Concentricity (μm) ≤1.0
    Coating Diameter (μm) 165 ± 5
    Coating Type Dual Layer Acrylate
    Operating Temperature (°C) -55 to +85
    Technical Bulletins