These fibres are designed to operate efficiently at both 1310 and 1550 nm, and the higher NA enhances bend performance. Various coatings and buffer sizes are offered to meet environmental requirements and size constraints.
Unit of Measure

Optical Properties


N/A Single-mode

Operating Wavelength

N/A 1310 to 1550 nm

Cutoff Wavelength

N/A ≤ 1310 nm

Mode Field Diameter

N/A @ 1310 nm, 6.7 ± 0.75 µm@ 1550 nm, 7.5 (nominal) µm


N/A @ 1310 nm, ≤ 0.75 dB/km@ 1550 nm, ≤ 0.5 dB/km

Numerical Aperture (Nominal)

N/A 0.16

Dimensions/Geometric Properties

Core Diameter (Nominal)

N/A 6.0 µm

Clad Diameter

N/A 80 ± 1 µm

Coating/Buffer Diameter

N/A 135 ± 5 µm

Clad Non-Circularity

N/A ≤ 2.0%

Core/Clad Offset

N/A ≤ 0.5 µm

Coating/Buffer Descriptions

Coating Material

N/A Single UV Acrylate

Operating Temperature

N/A -40 to +85 ºC

Mechanical and Testing Data

Short-Term Bend Radius

N/A ≥ 7 mm

Long-Term Bend Radius

N/A ≥ 11 mm

Proof Test Level

N/A ≥ 200 kpsi1.38 GPa

Ordering Information

Product Description Code

N/A SMM-D1310A

Order From Location

1.888.438.9936 toll-free in the United States and Canada
1.860.678.0371 from outside the U.S.A.
55 Darling Drive
Avon, CT 06001, USA

Order By Item #

N/A CF04246-31

Typical Applications

N/A Gyroscopes Sensors Tap Couplers WDM Pump/Signal Couplers


N/A Buffer Color Buffer Diameter Buffer Material Cabling Metalization Proof Test Termination