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1550 nm Select Cutoff

Single-Mode Fibers

Nufern’s 1550B-HP high-performance select cutoff bend insensitive single-mode fiber is optimized for use in small form

factor active and passive components requiring tight bend radii. With a bend loss considerably lower than SMF-28™, 1550B

HP is ideal for the video leg in FTTH CWDM and applications such as smaller form factor C and L-band components and low

NA planar waveguides.

Typical Applications

• FTTx components and modules

• Compact C and L-band components

• Low NA planar waveguides

• Metro components

Features & Benefits

• Optimized cutoff for 1550 nm wavelength — Extremely low bend loss

• Tight mechanical and optical tolerances — high yield component manufacturing

• Mode matched to SMF-28 — Low splice loss to standard fibers

• High proof test for tighter bends — Critical for long-term reliability in tight bend applications

Optical Specifications

1550B-HP

1550B-HP-80

Operating Wavelength

1460 – 1620 nm

1460 – 1620 nm

Core NA

0.130

0.130

Mode Field Diameter

9.5 ± 0.5 µm @ 1550 nm

9.5 ± 0.5 µm @ 1550 nm

Cutoff

1400 ± 50 nm

1400 ± 50 nm

Core Attenuation

≤ 0.5 dB/km @ 1550 nm

≤ 0.5 dB/km @ 1550 nm

Geometrical & Mechanical

Specifications

Cladding Diameter

125.0 ± 1.0 µm

80.0 ± 1.0 µm

Core Diameter

9.0 µm

9.0 µm

Coating Diameter

245.0 ± 15.0 µm

165.0 ± 10.0 µm

Coating Concentricity

< 5.0 µm

< 5.0 µm

Core/Clad Offset

≤ 0.50 µm

≤ 0.50 µm

Coating Material

UV Cured, Dual Acrylate

UV Cured, Dual Acrylate

Operating Temperature Range

-55 to 85 °C

-55 to 85 °C

Short Term Bend Radius

≥ 6 mm

≥ 4 mm

Long Term Bend Radius

≥ 13 mm

≥ 9 mm

Prooftest Level

≥ 200 kpsi (1.4 GN/m²)

≥ 200 kpsi (1.4 GN/m²)