Bending Insensitive Single-mode Fibre

The YOFC bending insensitive single-mode fibre (BI-SMF) is a specialty optical fibre developed for applications demanding exceptionally high levels of bending insensitiveness. With a special waveguide structure design, the optical fibre demonstrates excellent bending insensitiveness, with the minimum bending radius up to 5 mm. Through strict control of the raw materials and drawing process of fibre preform, the optical fibre exhibits reliable mechanical performance, meeting the requirements of h

In this series, BI1011-A is suitable for optical-fibre guidance, while BI1015-A, BI1015-B, and BI1017-A are suitable for optical fibre hydrophones. B11015-B is a fine-diameter optical fibre with a cladding diameter of 80 μm, while Bl1017-A is a fine-diameter optical fibre with a cladding diameter of 60 μm, serving miniaturized optical devices.

Applications

  • Small-sized optical devices

  • Optical-fibre guidance

  • Hydrophone

Characteristics

  • Excellent macro-bending performance including L-band

  • Low micro-bending loss

  • Accurate geometrical parameters

  • Excellent mechanical performance, with the proof test level up to 200 kpsi

  • 60μm cladding diameter, realizing the miniaturization of optical fibre

Specifications

Fibre type

BI 6/125-18/250™BI 6/100-18/200BI 7/125-18/250BI 7/80-18/170™BI 7/80-19/170BI 8/125-14/250BI 4/60-30/100
Part No.BI1011-ABI1011-CBI1015-ABI1015-BBI1015-FBI1016-ABI1017-A
Optical properties
Fibre Cutoff wavelength (nm)--1350~15001350~15001350~1500≤12601350~1520
Cable Cutoff wavelength (nm)≤1260≤1260---≤1260-
Zero dispersion wavelength (nm)≤1420≤1420---1300~1324-
Mode field diameter @1310 nm (μm)6.5±0.46.5±0.4---8.6±0.4-
Mode field diameter @1550 nm (μm)7.4±0.57.4±0.57.5±0.47.0±0.46.6±0.49.6±0.54.0~4.5
Attenuation @1310 nm (dB/km)≤0.39≤0.42---≤0.35-
Attenuation @1383 nm (dB/km)-------
Attenuation @1490 nm (dB/km)≤0.26≤0.32---≤0.21-
Attenuation @1550 nm (dB/km)≤0.24≤0.30≤0.26≤0.28≤0.28≤0.23≤1.0
Attenuation @1625 nm (dB/km)≤0.25≤0.31≤0.27≤0.29≤0.29--
Geometrical properties
Cladding diameter (μm)124.7±0.5100.0±1.0124.7±0.580.0±1.080.0±1.0124.4±0.460.0±1.0
Coating diameter (μm)240.0±5.0198.0±5.0240.0±5.0170.0±5.0170.0±5.0240.0±5.0100.0±5.0
Cladding non-circularity (%)≤1.0≤1.0≤0.7≤0.7≤0.7≤0.7≤1.0
Core/Cladding concentricity (μm)≤0.6≤0.6≤0.6≤0.6≤0.6≤0.6≤0.5
Macro-bending induced attenuation
1 turn, φ10 mm (dB)1550nm-≤0.05---≤0.15-
1625nm-≤0.15---≤0.45-
1 turn, φ15 mm (dB)1550nm≤0.05----≤0.05-
1625nm≤0.10----≤0.25-
1 turn, φ20 mm (dB)1550nm≤0.02----≤0.03-
1625nm≤0.05----≤0.10-
25 turns φ10 mm (dB)1550nm--≤0.02≤0.02≤0.02-≤0.01
10 turns φ30 mm (dB)1550nm≤0.01------
1625nm≤0.02------
Mechanical performance
Proof test level (kpsi)150150150200200100200
Environmental properties
Temperature (°C)-60 ~ 85-60 ~ 85-60 ~ 85-60 ~ 85-60 ~ 85-60 ~ 85-60 ~ 85

① An optical fibre with an outer diameter of 200 μm is available.
② An optical fibre with an outer diameter of 135 μm is available.